diff --git a/gns3server/compute/base_manager.py b/gns3server/compute/base_manager.py
index 4dd8ae36..3e3398a2 100644
--- a/gns3server/compute/base_manager.py
+++ b/gns3server/compute/base_manager.py
@@ -127,7 +127,7 @@ class BaseManager:
 
         tasks = []
         for node_id in self._nodes.keys():
-            tasks.append(asyncio.async(self.close_node(node_id)))
+            tasks.append(asyncio.ensure_future(self.close_node(node_id)))
 
         if tasks:
             done, _ = yield from asyncio.wait(tasks)
diff --git a/gns3server/compute/docker/docker_vm.py b/gns3server/compute/docker/docker_vm.py
index 4ac9e21d..c56a13c9 100644
--- a/gns3server/compute/docker/docker_vm.py
+++ b/gns3server/compute/docker/docker_vm.py
@@ -511,7 +511,7 @@ class DockerVM(BaseNode):
 
         output_stream.feed_data(self.name.encode() + b" console is now available... Press RETURN to get started.\r\n")
 
-        asyncio.async(self._read_console_output(self._console_websocket, output_stream))
+        asyncio.ensure_future(self._read_console_output(self._console_websocket, output_stream))
 
     @asyncio.coroutine
     def _read_console_output(self, ws, out):
diff --git a/gns3server/compute/dynamips/__init__.py b/gns3server/compute/dynamips/__init__.py
index c6fd1c05..7a3b550e 100644
--- a/gns3server/compute/dynamips/__init__.py
+++ b/gns3server/compute/dynamips/__init__.py
@@ -172,7 +172,7 @@ class Dynamips(BaseManager):
 
         tasks = []
         for device in self._devices.values():
-            tasks.append(asyncio.async(device.hypervisor.stop()))
+            tasks.append(asyncio.ensure_future(device.hypervisor.stop()))
 
         if tasks:
             done, _ = yield from asyncio.wait(tasks)
@@ -196,7 +196,7 @@ class Dynamips(BaseManager):
         tasks = []
         for device in self._devices.values():
             if device.project.id == project.id:
-                tasks.append(asyncio.async(device.delete()))
+                tasks.append(asyncio.ensure_future(device.delete()))
 
         if tasks:
             done, _ = yield from asyncio.wait(tasks)
diff --git a/gns3server/compute/dynamips/nodes/router.py b/gns3server/compute/dynamips/nodes/router.py
index 4e31ea4f..724bc1a1 100644
--- a/gns3server/compute/dynamips/nodes/router.py
+++ b/gns3server/compute/dynamips/nodes/router.py
@@ -194,7 +194,7 @@ class Router(BaseNode):
         """
         Called when the NVRAM file has changed
         """
-        asyncio.async(self.save_configs())
+        asyncio.ensure_future(self.save_configs())
 
     @property
     def dynamips_id(self):
diff --git a/gns3server/compute/project.py b/gns3server/compute/project.py
index 8be8fb1e..b26548c8 100644
--- a/gns3server/compute/project.py
+++ b/gns3server/compute/project.py
@@ -325,7 +325,7 @@ class Project:
 
         tasks = []
         for node in self._nodes:
-            tasks.append(asyncio.async(node.manager.close_node(node.id)))
+            tasks.append(asyncio.ensure_future(node.manager.close_node(node.id)))
 
         if tasks:
             done, _ = yield from asyncio.wait(tasks)
diff --git a/gns3server/compute/vmware/__init__.py b/gns3server/compute/vmware/__init__.py
index 6f1a6cf1..48b62921 100644
--- a/gns3server/compute/vmware/__init__.py
+++ b/gns3server/compute/vmware/__init__.py
@@ -738,4 +738,4 @@ if __name__ == '__main__':
     loop = asyncio.get_event_loop()
     vmware = VMware.instance()
     print("=> Check version")
-    loop.run_until_complete(asyncio.async(vmware.check_vmware_version()))
+    loop.run_until_complete(asyncio.ensure_future(vmware.check_vmware_version()))
diff --git a/gns3server/controller/compute.py b/gns3server/controller/compute.py
index e1948a35..673eb3fd 100644
--- a/gns3server/controller/compute.py
+++ b/gns3server/controller/compute.py
@@ -415,7 +415,7 @@ class Compute:
                     if self._connection_failure == 5:
                         log.warning("Cannot connect to compute '{}': {}".format(self._id, e))
                         yield from self._controller.close_compute_projects(self)
-                    asyncio.get_event_loop().call_later(2, lambda: asyncio.async(self._try_reconnect()))
+                    asyncio.get_event_loop().call_later(2, lambda: asyncio.ensure_future(self._try_reconnect()))
                 return
             except aiohttp.web.HTTPNotFound:
                 raise aiohttp.web.HTTPConflict(text="The server {} is not a GNS3 server or it's a 1.X server".format(self._id))
@@ -472,7 +472,7 @@ class Compute:
 
         # Try to reconnect after 1 seconds if server unavailable only if not during tests (otherwise we create a ressources usage bomb)
         if not hasattr(sys, "_called_from_test") or not sys._called_from_test:
-            asyncio.get_event_loop().call_later(1, lambda: asyncio.async(self.connect()))
+            asyncio.get_event_loop().call_later(1, lambda: asyncio.ensure_future(self.connect()))
         self._ws = None
         self._cpu_usage_percent = None
         self._memory_usage_percent = None
diff --git a/gns3server/controller/gns3vm/__init__.py b/gns3server/controller/gns3vm/__init__.py
index acd9f7c3..0234a022 100644
--- a/gns3server/controller/gns3vm/__init__.py
+++ b/gns3server/controller/gns3vm/__init__.py
@@ -302,7 +302,7 @@ class GNS3VM:
 
             # check if the VM is in the same subnet as the local server, start 10 seconds later to give
             # some time for the compute in the VM to be ready for requests
-            asyncio.get_event_loop().call_later(10, lambda: asyncio.async(self._check_network(compute)))
+            asyncio.get_event_loop().call_later(10, lambda: asyncio.ensure_future(self._check_network(compute)))
 
     @asyncio.coroutine
     def _check_network(self, compute):
diff --git a/gns3server/controller/link.py b/gns3server/controller/link.py
index 0c9d5bc4..b6b03044 100644
--- a/gns3server/controller/link.py
+++ b/gns3server/controller/link.py
@@ -288,7 +288,7 @@ class Link:
 
         self._capturing = True
         self._capture_file_name = capture_file_name
-        self._streaming_pcap = asyncio.async(self._start_streaming_pcap())
+        self._streaming_pcap = asyncio.ensure_future(self._start_streaming_pcap())
         self._project.controller.notification.emit("link.updated", self.__json__())
 
     @asyncio.coroutine
diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 02698e3f..1983fa20 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -867,7 +867,7 @@ class Project:
             # Start all in the background without waiting for completion
             # we ignore errors because we want to let the user open
             # their project and fix it
-            asyncio.async(self.start_all())
+            asyncio.ensure_future(self.start_all())
 
     @asyncio.coroutine
     def wait_loaded(self):
diff --git a/gns3server/handlers/api/compute/notification_handler.py b/gns3server/handlers/api/compute/notification_handler.py
index 3580a286..72fe08f0 100644
--- a/gns3server/handlers/api/compute/notification_handler.py
+++ b/gns3server/handlers/api/compute/notification_handler.py
@@ -43,7 +43,7 @@ class NotificationHandler:
         ws = WebSocketResponse()
         yield from ws.prepare(request)
 
-        asyncio.async(process_websocket(ws))
+        asyncio.ensure_future(process_websocket(ws))
 
         with notifications.queue() as queue:
             while True:
diff --git a/gns3server/handlers/api/controller/project_handler.py b/gns3server/handlers/api/controller/project_handler.py
index 8d7337dd..bef0b8ab 100644
--- a/gns3server/handlers/api/controller/project_handler.py
+++ b/gns3server/handlers/api/controller/project_handler.py
@@ -246,7 +246,7 @@ class ProjectHandler:
         ws = aiohttp.web.WebSocketResponse()
         yield from ws.prepare(request)
 
-        asyncio.async(process_websocket(ws))
+        asyncio.ensure_future(process_websocket(ws))
 
         with controller.notification.queue(project) as queue:
             while True:
diff --git a/gns3server/handlers/api/controller/server_handler.py b/gns3server/handlers/api/controller/server_handler.py
index 7de4a66a..05a6e9e3 100644
--- a/gns3server/handlers/api/controller/server_handler.py
+++ b/gns3server/handlers/api/controller/server_handler.py
@@ -57,7 +57,7 @@ class ServerHandler:
 
         tasks = []
         for project in projects:
-            tasks.append(asyncio.async(project.close()))
+            tasks.append(asyncio.ensure_future(project.close()))
 
         if tasks:
             done, _ = yield from asyncio.wait(tasks)
@@ -71,7 +71,7 @@ class ServerHandler:
         # then shutdown the server itself
         from gns3server.web.web_server import WebServer
         server = WebServer.instance()
-        asyncio.async(server.shutdown_server())
+        asyncio.ensure_future(server.shutdown_server())
         response.set_status(201)
 
     @Route.get(
diff --git a/gns3server/run.py b/gns3server/run.py
index 23a74827..6549efb8 100644
--- a/gns3server/run.py
+++ b/gns3server/run.py
@@ -223,9 +223,9 @@ def run():
     if server_config.getboolean("local"):
         log.warning("Local mode is enabled. Beware, clients will have full control on your filesystem")
 
-    # we only support Python 3 version >= 3.4
-    if sys.version_info < (3, 4):
-        raise SystemExit("Python 3.4 or higher is required")
+    # we only support Python 3 version >= 3.4.4
+    if sys.version_info < (3, 4, 4):
+        raise SystemExit("Python 3.4.4 or higher is required")
 
     user_log.info("Running with Python {major}.{minor}.{micro} and has PID {pid}".format(
                   major=sys.version_info[0], minor=sys.version_info[1],
diff --git a/gns3server/utils/asyncio/__init__.py b/gns3server/utils/asyncio/__init__.py
index 34e7571c..afba35df 100644
--- a/gns3server/utils/asyncio/__init__.py
+++ b/gns3server/utils/asyncio/__init__.py
@@ -108,7 +108,7 @@ def _check_process(process, termination_callback):
 def monitor_process(process, termination_callback):
     """Call termination_callback when a process dies"""
 
-    asyncio.async(_check_process(process, termination_callback))
+    asyncio.ensure_future(_check_process(process, termination_callback))
 
 
 @asyncio.coroutine
diff --git a/gns3server/utils/asyncio/raw_command_server.py b/gns3server/utils/asyncio/raw_command_server.py
index da6e82c1..d605ed8c 100644
--- a/gns3server/utils/asyncio/raw_command_server.py
+++ b/gns3server/utils/asyncio/raw_command_server.py
@@ -69,8 +69,8 @@ class AsyncioRawCommandServer:
             else:
                 replaces.append((replace[0], replace[1], ))
 
-        network_read = asyncio.async(network_reader.read(READ_SIZE))
-        reader_read = asyncio.async(process_reader.read(READ_SIZE))
+        network_read = asyncio.ensure_future(network_reader.read(READ_SIZE))
+        reader_read = asyncio.ensure_future(process_reader.read(READ_SIZE))
         timeout = 30
 
         while True:
@@ -89,7 +89,7 @@ class AsyncioRawCommandServer:
                     if network_reader.at_eof():
                         raise ConnectionResetError()
 
-                    network_read = asyncio.async(network_reader.read(READ_SIZE))
+                    network_read = asyncio.ensure_future(network_reader.read(READ_SIZE))
 
                     process_writer.write(data)
                     yield from process_writer.drain()
@@ -97,7 +97,7 @@ class AsyncioRawCommandServer:
                     if process_reader.at_eof():
                         raise ConnectionResetError()
 
-                    reader_read = asyncio.async(process_reader.read(READ_SIZE))
+                    reader_read = asyncio.ensure_future(process_reader.read(READ_SIZE))
 
                     for replace in replaces:
                         data = data.replace(replace[0], replace[1])
diff --git a/gns3server/utils/asyncio/telnet_server.py b/gns3server/utils/asyncio/telnet_server.py
index 782b12ae..d85134e1 100644
--- a/gns3server/utils/asyncio/telnet_server.py
+++ b/gns3server/utils/asyncio/telnet_server.py
@@ -229,13 +229,13 @@ class AsyncioTelnetServer:
                 self._reader_process = network_reader
             if self._reader:
                 if self._reader_process == network_reader:
-                    self._current_read = asyncio.async(self._reader.read(READ_SIZE))
+                    self._current_read = asyncio.ensure_future(self._reader.read(READ_SIZE))
                     return self._current_read
         return None
 
     @asyncio.coroutine
     def _process(self, network_reader, network_writer, connection):
-        network_read = asyncio.async(network_reader.read(READ_SIZE))
+        network_read = asyncio.ensure_future(network_reader.read(READ_SIZE))
         reader_read = yield from self._get_reader(network_reader)
 
         while True:
@@ -261,7 +261,7 @@ class AsyncioTelnetServer:
                     if network_reader.at_eof():
                         raise ConnectionResetError()
 
-                    network_read = asyncio.async(network_reader.read(READ_SIZE))
+                    network_read = asyncio.ensure_future(network_reader.read(READ_SIZE))
 
                     if IAC in data:
                         data = yield from self._IAC_parser(data, network_reader, network_writer, connection)
@@ -418,7 +418,7 @@ if __name__ == '__main__':
     logging.basicConfig(level=logging.DEBUG)
     loop = asyncio.get_event_loop()
 
-    process = loop.run_until_complete(asyncio.async(asyncio.subprocess.create_subprocess_exec("/bin/sh", "-i",
+    process = loop.run_until_complete(asyncio.ensure_future(asyncio.subprocess.create_subprocess_exec("/bin/sh", "-i",
                                                                                               stdout=asyncio.subprocess.PIPE,
                                                                                               stderr=asyncio.subprocess.STDOUT,
                                                                                               stdin=asyncio.subprocess.PIPE)))
diff --git a/gns3server/web/web_server.py b/gns3server/web/web_server.py
index c398e631..d425c808 100644
--- a/gns3server/web/web_server.py
+++ b/gns3server/web/web_server.py
@@ -136,7 +136,7 @@ class WebServer:
 
         def signal_handler(signame, *args):
             log.warning("Server has got signal {}, exiting...".format(signame))
-            asyncio.async(self.shutdown_server())
+            asyncio.ensure_future(self.shutdown_server())
 
         signals = ["SIGTERM", "SIGINT"]
         if sys.platform.startswith("win"):
@@ -203,7 +203,7 @@ class WebServer:
         # Because with a large image collection
         # without md5sum already computed we start the
         # computing with server start
-        asyncio.async(Qemu.instance().list_images())
+        asyncio.ensure_future(Qemu.instance().list_images())
 
     def run(self):
         """
@@ -283,7 +283,7 @@ class WebServer:
         self._exit_handling()
 
         if server_config.getboolean("shell"):
-            asyncio.async(self.start_shell())
+            asyncio.ensure_future(self.start_shell())
 
         try:
             self._loop.run_forever()
diff --git a/tests/compute/docker/test_docker.py b/tests/compute/docker/test_docker.py
index db43c84c..b840fa83 100644
--- a/tests/compute/docker/test_docker.py
+++ b/tests/compute/docker/test_docker.py
@@ -45,7 +45,7 @@ def test_query_success(loop, vm):
 
     response.read.side_effect = read
     vm._session.request = AsyncioMagicMock(return_value=response)
-    data = loop.run_until_complete(asyncio.async(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
+    data = loop.run_until_complete(asyncio.ensure_future(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
     vm._session.request.assert_called_with('POST',
                                            'http://docker/v1.25/test',
                                            data='{"a": true}',
@@ -68,7 +68,7 @@ def test_query_error(loop, vm):
     response.read.side_effect = read
     vm._session.request = AsyncioMagicMock(return_value=response)
     with pytest.raises(DockerError):
-        data = loop.run_until_complete(asyncio.async(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
+        data = loop.run_until_complete(asyncio.ensure_future(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
     vm._session.request.assert_called_with('POST',
                                            'http://docker/v1.25/test',
                                            data='{"a": true}',
@@ -89,7 +89,7 @@ def test_query_error_json(loop, vm):
     response.read.side_effect = read
     vm._session.request = AsyncioMagicMock(return_value=response)
     with pytest.raises(DockerError):
-        data = loop.run_until_complete(asyncio.async(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
+        data = loop.run_until_complete(asyncio.ensure_future(vm.query("POST", "test", data={"a": True}, params={"b": 1})))
     vm._session.request.assert_called_with('POST',
                                            'http://docker/v1.25/test',
                                            data='{"a": true}',
@@ -126,7 +126,7 @@ def test_list_images(loop):
     ]
 
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        images = loop.run_until_complete(asyncio.async(Docker.instance().list_images()))
+        images = loop.run_until_complete(asyncio.ensure_future(Docker.instance().list_images()))
         mock.assert_called_with("GET", "images/json", params={"all": 0})
     assert len(images) == 5
     assert {"image": "ubuntu:12.04"} in images
@@ -160,7 +160,7 @@ def test_pull_image(loop):
 
     with asyncio_patch("gns3server.compute.docker.Docker.query", side_effect=DockerHttp404Error("404")):
         with asyncio_patch("gns3server.compute.docker.Docker.http_query", return_value=mock_query) as mock:
-            images = loop.run_until_complete(asyncio.async(Docker.instance().pull_image("ubuntu")))
+            images = loop.run_until_complete(asyncio.ensure_future(Docker.instance().pull_image("ubuntu")))
             mock.assert_called_with("POST", "images/create", params={"fromImage": "ubuntu"}, timeout=None)
 
 
@@ -174,7 +174,7 @@ def test_docker_check_connection_docker_minimum_version(vm, loop):
         asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response):
         vm._connected = False
         with pytest.raises(DockerError):
-            loop.run_until_complete(asyncio.async(vm._check_connection()))
+            loop.run_until_complete(asyncio.ensure_future(vm._check_connection()))
 
 
 def test_docker_check_connection_docker_preferred_version_against_newer(vm, loop):
@@ -185,7 +185,7 @@ def test_docker_check_connection_docker_preferred_version_against_newer(vm, loop
     with patch("gns3server.compute.docker.Docker.connector"), \
         asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response):
         vm._connected = False
-        loop.run_until_complete(asyncio.async(vm._check_connection()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_connection()))
         assert vm._api_version == DOCKER_PREFERRED_API_VERSION
 
 
@@ -197,5 +197,5 @@ def test_docker_check_connection_docker_preferred_version_against_older(vm, loop
     with patch("gns3server.compute.docker.Docker.connector"), \
         asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response):
         vm._connected = False
-        loop.run_until_complete(asyncio.async(vm._check_connection()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_connection()))
         assert vm._api_version == DOCKER_MINIMUM_API_VERSION
\ No newline at end of file
diff --git a/tests/compute/docker/test_docker_vm.py b/tests/compute/docker/test_docker_vm.py
index f5f8f7e0..0672a313 100644
--- a/tests/compute/docker/test_docker_vm.py
+++ b/tests/compute/docker/test_docker_vm.py
@@ -86,7 +86,7 @@ def test_create(loop, project, manager):
     with asyncio_patch("gns3server.compute.docker.Docker.list_images", return_value=[{"image": "ubuntu"}]) as mock_list_images:
         with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
             vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu:latest")
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -125,7 +125,7 @@ def test_create_with_tag(loop, project, manager):
     with asyncio_patch("gns3server.compute.docker.Docker.list_images", return_value=[{"image": "ubuntu"}]) as mock_list_images:
         with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
             vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu:16.04")
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -167,7 +167,7 @@ def test_create_vnc(loop, project, manager):
             vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu", console_type="vnc", console=5900)
             vm._start_vnc = MagicMock()
             vm._display = 42
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -212,7 +212,7 @@ def test_create_start_cmd(loop, project, manager):
         with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
             vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu:latest")
             vm._start_command = "/bin/ls"
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -256,7 +256,7 @@ def test_create_environment(loop, project, manager):
         with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
             vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu")
             vm.environment = "YES=1\nNO=0\nGNS3_MAX_ETHERNET=eth2"
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -311,7 +311,7 @@ def test_create_image_not_available(loop, project, manager):
     vm._get_image_information.side_effect = information
     with asyncio_patch("gns3server.compute.docker.DockerVM.pull_image", return_value=True) as mock_pull:
         with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
             mock.assert_called_with("POST", "containers/create", data={
                 "Tty": True,
                 "OpenStdin": True,
@@ -357,17 +357,17 @@ def test_get_container_state(loop, vm):
         }
     }
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        assert loop.run_until_complete(asyncio.async(vm._get_container_state())) == "running"
+        assert loop.run_until_complete(asyncio.ensure_future(vm._get_container_state())) == "running"
 
     response["State"]["Running"] = False
     response["State"]["Paused"] = True
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        assert loop.run_until_complete(asyncio.async(vm._get_container_state())) == "paused"
+        assert loop.run_until_complete(asyncio.ensure_future(vm._get_container_state())) == "paused"
 
     response["State"]["Running"] = False
     response["State"]["Paused"] = False
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        assert loop.run_until_complete(asyncio.async(vm._get_container_state())) == "exited"
+        assert loop.run_until_complete(asyncio.ensure_future(vm._get_container_state())) == "exited"
 
 
 def test_is_running(loop, vm):
@@ -378,17 +378,17 @@ def test_is_running(loop, vm):
         }
     }
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        assert loop.run_until_complete(asyncio.async(vm.is_running())) is False
+        assert loop.run_until_complete(asyncio.ensure_future(vm.is_running())) is False
 
     response["State"]["Running"] = True
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
-        assert loop.run_until_complete(asyncio.async(vm.is_running())) is True
+        assert loop.run_until_complete(asyncio.ensure_future(vm.is_running())) is True
 
 
 def test_pause(loop, vm):
 
     with asyncio_patch("gns3server.compute.docker.Docker.query") as mock:
-        loop.run_until_complete(asyncio.async(vm.pause()))
+        loop.run_until_complete(asyncio.ensure_future(vm.pause()))
 
     mock.assert_called_with("POST", "containers/e90e34656842/pause")
     assert vm.status == "suspended"
@@ -397,7 +397,7 @@ def test_pause(loop, vm):
 def test_unpause(loop, vm):
 
     with asyncio_patch("gns3server.compute.docker.Docker.query") as mock:
-        loop.run_until_complete(asyncio.async(vm.unpause()))
+        loop.run_until_complete(asyncio.ensure_future(vm.unpause()))
 
     mock.assert_called_with("POST", "containers/e90e34656842/unpause")
 
@@ -417,10 +417,10 @@ def test_start(loop, vm, manager, free_console_port):
     vm._start_console = AsyncioMagicMock()
 
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
     with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-        loop.run_until_complete(asyncio.async(vm.start()))
+        loop.run_until_complete(asyncio.ensure_future(vm.start()))
 
     mock_query.assert_called_with("POST", "containers/e90e34656842/start")
     vm._add_ubridge_connection.assert_called_once_with(nio, 0)
@@ -436,7 +436,7 @@ def test_start_namespace_failed(loop, vm, manager, free_console_port):
     vm.adapters = 1
 
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
         with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
@@ -446,7 +446,7 @@ def test_start_namespace_failed(loop, vm, manager, free_console_port):
                         with asyncio_patch("gns3server.compute.docker.DockerVM._get_log", return_value='Hello not available') as mock_log:
 
                             with pytest.raises(DockerError):
-                                loop.run_until_complete(asyncio.async(vm.start()))
+                                loop.run_until_complete(asyncio.ensure_future(vm.start()))
 
     mock_query.assert_any_call("POST", "containers/e90e34656842/start")
     mock_add_ubridge_connection.assert_called_once_with(nio, 0)
@@ -468,7 +468,7 @@ def test_start_without_nio(loop, vm, manager, free_console_port):
                 with asyncio_patch("gns3server.compute.docker.DockerVM._get_namespace", return_value=42) as mock_namespace:
                     with asyncio_patch("gns3server.compute.docker.DockerVM._add_ubridge_connection") as mock_add_ubridge_connection:
                         with asyncio_patch("gns3server.compute.docker.DockerVM._start_console") as mock_start_console:
-                            loop.run_until_complete(asyncio.async(vm.start()))
+                            loop.run_until_complete(asyncio.ensure_future(vm.start()))
 
     mock_query.assert_called_with("POST", "containers/e90e34656842/start")
     assert mock_add_ubridge_connection.called
@@ -481,7 +481,7 @@ def test_start_unpause(loop, vm, manager, free_console_port):
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="paused"):
         with asyncio_patch("gns3server.compute.docker.DockerVM.unpause", return_value="paused") as mock:
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
     assert mock.called
     assert vm.status == "started"
 
@@ -489,7 +489,7 @@ def test_start_unpause(loop, vm, manager, free_console_port):
 def test_restart(loop, vm):
 
     with asyncio_patch("gns3server.compute.docker.Docker.query") as mock:
-        loop.run_until_complete(asyncio.async(vm.restart()))
+        loop.run_until_complete(asyncio.ensure_future(vm.restart()))
 
     mock.assert_called_with("POST", "containers/e90e34656842/restart")
 
@@ -502,7 +502,7 @@ def test_stop(loop, vm):
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="running"):
         with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-            loop.run_until_complete(asyncio.async(vm.stop()))
+            loop.run_until_complete(asyncio.ensure_future(vm.stop()))
             mock_query.assert_called_with("POST", "containers/e90e34656842/stop", params={"t": 5})
     assert mock.stop.called
     assert vm._ubridge_hypervisor is None
@@ -514,7 +514,7 @@ def test_stop_paused_container(loop, vm):
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="paused"):
         with asyncio_patch("gns3server.compute.docker.DockerVM.unpause") as mock_unpause:
             with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-                loop.run_until_complete(asyncio.async(vm.stop()))
+                loop.run_until_complete(asyncio.ensure_future(vm.stop()))
                 mock_query.assert_called_with("POST", "containers/e90e34656842/stop", params={"t": 5})
                 assert mock_unpause.called
 
@@ -532,7 +532,7 @@ def test_update(loop, vm):
     with asyncio_patch("gns3server.compute.docker.Docker.list_images", return_value=[{"image": "ubuntu"}]) as mock_list_images:
         with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
             with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock_query:
-                loop.run_until_complete(asyncio.async(vm.update()))
+                loop.run_until_complete(asyncio.ensure_future(vm.update()))
 
     mock_query.assert_any_call("DELETE", "containers/e90e34656842", params={"force": 1, "v": 1})
     mock_query.assert_any_call("POST", "containers/create", data={
@@ -582,7 +582,7 @@ def test_update_vnc(loop, vm):
         with asyncio_patch("gns3server.compute.docker.Docker.list_images", return_value=[{"image": "ubuntu"}]) as mock_list_images:
             with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
                 with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock_query:
-                    loop.run_until_complete(asyncio.async(vm.update()))
+                    loop.run_until_complete(asyncio.ensure_future(vm.update()))
 
     assert vm.console == original_console
     assert vm.aux == original_aux
@@ -601,7 +601,7 @@ def test_update_running(loop, vm):
     with asyncio_patch("gns3server.compute.docker.Docker.list_images", return_value=[{"image": "ubuntu"}]) as mock_list_images:
         with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="running"):
             with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock_query:
-                loop.run_until_complete(asyncio.async(vm.update()))
+                loop.run_until_complete(asyncio.ensure_future(vm.update()))
 
     mock_query.assert_any_call("DELETE", "containers/e90e34656842", params={"force": 1, "v": 1})
     mock_query.assert_any_call("POST", "containers/create", data={
@@ -639,7 +639,7 @@ def test_delete(loop, vm):
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
         with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-            loop.run_until_complete(asyncio.async(vm.delete()))
+            loop.run_until_complete(asyncio.ensure_future(vm.delete()))
         mock_query.assert_called_with("DELETE", "containers/e90e34656842", params={"force": 1, "v": 1})
 
 
@@ -649,11 +649,11 @@ def test_close(loop, vm, port_manager):
            "rport": 4343,
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
         with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-            loop.run_until_complete(asyncio.async(vm.close()))
+            loop.run_until_complete(asyncio.ensure_future(vm.close()))
         mock_query.assert_called_with("DELETE", "containers/e90e34656842", params={"force": 1, "v": 1})
 
     assert vm._closed is True
@@ -668,7 +668,7 @@ def test_close_vnc(loop, vm, port_manager):
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="stopped"):
         with asyncio_patch("gns3server.compute.docker.Docker.query") as mock_query:
-            loop.run_until_complete(asyncio.async(vm.close()))
+            loop.run_until_complete(asyncio.ensure_future(vm.close()))
         mock_query.assert_called_with("DELETE", "containers/e90e34656842", params={"force": 1, "v": 1})
 
     assert vm._closed is True
@@ -682,7 +682,7 @@ def test_get_namespace(loop, vm):
         }
     }
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock_query:
-        assert loop.run_until_complete(asyncio.async(vm._get_namespace())) == 42
+        assert loop.run_until_complete(asyncio.ensure_future(vm._get_namespace())) == 42
     mock_query.assert_called_with("GET", "containers/e90e34656842/json")
 
 
@@ -697,7 +697,7 @@ def test_add_ubridge_connection(loop, vm):
     vm._ubridge_hypervisor = MagicMock()
     vm._namespace = 42
 
-    loop.run_until_complete(asyncio.async(vm._add_ubridge_connection(nio, 0)))
+    loop.run_until_complete(asyncio.ensure_future(vm._add_ubridge_connection(nio, 0)))
 
     calls = [
         call.send('bridge create bridge0'),
@@ -718,7 +718,7 @@ def test_add_ubridge_connection_none_nio(loop, vm):
     vm._ubridge_hypervisor = MagicMock()
     vm._namespace = 42
 
-    loop.run_until_complete(asyncio.async(vm._add_ubridge_connection(nio, 0)))
+    loop.run_until_complete(asyncio.ensure_future(vm._add_ubridge_connection(nio, 0)))
 
     calls = [
         call.send('bridge create bridge0'),
@@ -739,7 +739,7 @@ def test_add_ubridge_connection_invalid_adapter_number(loop, vm):
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
     with pytest.raises(DockerError):
-        loop.run_until_complete(asyncio.async(vm._add_ubridge_connection(nio, 12)))
+        loop.run_until_complete(asyncio.ensure_future(vm._add_ubridge_connection(nio, 12)))
 
 
 def test_add_ubridge_connection_no_free_interface(loop, vm):
@@ -755,7 +755,7 @@ def test_add_ubridge_connection_no_free_interface(loop, vm):
         interfaces = ["tap-gns3-e{}".format(index) for index in range(4096)]
 
         with patch("psutil.net_if_addrs", return_value=interfaces):
-            loop.run_until_complete(asyncio.async(vm._add_ubridge_connection(nio, 0)))
+            loop.run_until_complete(asyncio.ensure_future(vm._add_ubridge_connection(nio, 0)))
 
 
 def test_adapter_add_nio_binding(vm, loop):
@@ -764,7 +764,7 @@ def test_adapter_add_nio_binding(vm, loop):
            "rport": 4343,
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
     assert vm._ethernet_adapters[0].get_nio(0) == nio
 
 
@@ -779,9 +779,9 @@ def test_adapter_udpate_nio_binding(vm, loop):
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="running"):
-        loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
-        loop.run_until_complete(asyncio.async(vm.adapter_update_nio_binding(0, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_update_nio_binding(0, nio)))
     assert vm._ubridge_apply_filters.called
 
 
@@ -793,9 +793,9 @@ def test_adapter_udpate_nio_binding_bridge_not_started(vm, loop):
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
     with asyncio_patch("gns3server.compute.docker.DockerVM._get_container_state", return_value="running"):
-        loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
-        loop.run_until_complete(asyncio.async(vm.adapter_update_nio_binding(0, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_update_nio_binding(0, nio)))
     assert vm._ubridge_apply_filters.called is False
 
 
@@ -806,7 +806,7 @@ def test_adapter_add_nio_binding_invalid_adapter(vm, loop):
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
     with pytest.raises(DockerError):
-        loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(12, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(12, nio)))
 
 
 def test_adapter_remove_nio_binding(vm, loop):
@@ -818,10 +818,10 @@ def test_adapter_remove_nio_binding(vm, loop):
            "rport": 4343,
            "rhost": "127.0.0.1"}
     nio = vm.manager.create_nio(nio)
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
 
     with asyncio_patch("gns3server.compute.docker.DockerVM._ubridge_send") as delete_ubridge_mock:
-        loop.run_until_complete(asyncio.async(vm.adapter_remove_nio_binding(0)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_remove_nio_binding(0)))
         assert vm._ethernet_adapters[0].get_nio(0) is None
         delete_ubridge_mock.assert_any_call('bridge stop bridge0')
         delete_ubridge_mock.assert_any_call('bridge remove_nio_udp bridge0 4242 127.0.0.1 4343')
@@ -829,15 +829,15 @@ def test_adapter_remove_nio_binding(vm, loop):
 
 def test_adapter_remove_nio_binding_invalid_adapter(vm, loop):
     with pytest.raises(DockerError):
-        loop.run_until_complete(asyncio.async(vm.adapter_remove_nio_binding(12)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_remove_nio_binding(12)))
 
 
 def test_start_capture(vm, tmpdir, manager, free_console_port, loop):
 
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
-    loop.run_until_complete(asyncio.async(vm.start_capture(0, output_file)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.start_capture(0, output_file)))
     assert vm._ethernet_adapters[0].get_nio(0).capturing
 
 
@@ -845,10 +845,10 @@ def test_stop_capture(vm, tmpdir, manager, free_console_port, loop):
 
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
     loop.run_until_complete(vm.start_capture(0, output_file))
     assert vm._ethernet_adapters[0].get_nio(0).capturing
-    loop.run_until_complete(asyncio.async(vm.stop_capture(0)))
+    loop.run_until_complete(asyncio.ensure_future(vm.stop_capture(0)))
     assert vm._ethernet_adapters[0].get_nio(0).capturing is False
 
 
@@ -861,7 +861,7 @@ def test_get_log(loop, vm):
     mock_query.read = read
 
     with asyncio_patch("gns3server.compute.docker.Docker.http_query", return_value=mock_query) as mock:
-        images = loop.run_until_complete(asyncio.async(vm._get_log()))
+        images = loop.run_until_complete(asyncio.ensure_future(vm._get_log()))
         mock.assert_called_with("GET", "containers/e90e34656842/logs", params={"stderr": 1, "stdout": 1}, data={})
 
 
@@ -870,7 +870,7 @@ def test_get_image_informations(project, manager, loop):
     }
     with asyncio_patch("gns3server.compute.docker.Docker.query", return_value=response) as mock:
         vm = DockerVM("test", str(uuid.uuid4()), project, manager, "ubuntu")
-        loop.run_until_complete(asyncio.async(vm._get_image_information()))
+        loop.run_until_complete(asyncio.ensure_future(vm._get_image_information()))
         mock.assert_called_with("GET", "images/ubuntu:latest/json")
 
 
@@ -900,7 +900,7 @@ def test_start_vnc(vm, loop):
     with patch("shutil.which", return_value="/bin/x"):
         with asyncio_patch("gns3server.compute.docker.docker_vm.wait_for_file_creation") as mock_wait:
             with asyncio_patch("asyncio.create_subprocess_exec") as mock_exec:
-                loop.run_until_complete(asyncio.async(vm._start_vnc()))
+                loop.run_until_complete(asyncio.ensure_future(vm._start_vnc()))
     assert vm._display is not None
     mock_exec.assert_any_call("Xvfb", "-nolisten", "tcp", ":{}".format(vm._display), "-screen", "0", "1280x1024x16")
     mock_exec.assert_any_call("x11vnc", "-forever", "-nopw", "-shared", "-geometry", "1280x1024", "-display", "WAIT:{}".format(vm._display), "-rfbport", str(vm.console), "-rfbportv6", str(vm.console), "-noncache", "-listen", "127.0.0.1")
@@ -909,13 +909,13 @@ def test_start_vnc(vm, loop):
 
 def test_start_vnc_xvfb_missing(vm, loop):
     with pytest.raises(DockerError):
-        loop.run_until_complete(asyncio.async(vm._start_vnc()))
+        loop.run_until_complete(asyncio.ensure_future(vm._start_vnc()))
 
 
 def test_start_aux(vm, loop):
 
     with asyncio_patch("asyncio.subprocess.create_subprocess_exec", return_value=MagicMock()) as mock_exec:
-        loop.run_until_complete(asyncio.async(vm._start_aux()))
+        loop.run_until_complete(asyncio.ensure_future(vm._start_aux()))
     mock_exec.assert_called_with('docker', 'exec', '-i', 'e90e34656842', '/gns3/bin/busybox', 'script', '-qfc', 'while true; do TERM=vt100 /gns3/bin/busybox sh; done', '/dev/null', stderr=asyncio.subprocess.STDOUT, stdin=asyncio.subprocess.PIPE, stdout=asyncio.subprocess.PIPE)
 
 
@@ -977,5 +977,5 @@ def test_read_console_output_with_binary_mode(vm, loop):
     output_stream = MagicMock()
 
     with asyncio_patch('gns3server.compute.docker.docker_vm.DockerVM.stop'):
-        loop.run_until_complete(asyncio.async(vm._read_console_output(input_stream, output_stream)))
+        loop.run_until_complete(asyncio.ensure_future(vm._read_console_output(input_stream, output_stream)))
         output_stream.feed_data.assert_called_once_with(b"test")
diff --git a/tests/compute/dynamips/test_dynamips_router.py b/tests/compute/dynamips/test_dynamips_router.py
index e3cf7fed..9c7e8425 100644
--- a/tests/compute/dynamips/test_dynamips_router.py
+++ b/tests/compute/dynamips/test_dynamips_router.py
@@ -70,6 +70,6 @@ def test_router_invalid_dynamips_path(project, manager, loop):
 
     with pytest.raises(DynamipsError):
         router = Router("test", "00010203-0405-0607-0809-0a0b0c0d0e0e", project, manager)
-        loop.run_until_complete(asyncio.async(router.create()))
+        loop.run_until_complete(asyncio.ensure_future(router.create()))
         assert router.name == "test"
         assert router.id == "00010203-0405-0607-0809-0a0b0c0d0e0e"
diff --git a/tests/compute/iou/test_iou_vm.py b/tests/compute/iou/test_iou_vm.py
index 8f899f7c..299fd6e8 100644
--- a/tests/compute/iou/test_iou_vm.py
+++ b/tests/compute/iou/test_iou_vm.py
@@ -102,7 +102,7 @@ def test_start(loop, vm):
 
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=mock_process) as mock_exec:
         mock_process.returncode = None
-        loop.run_until_complete(asyncio.async(vm.start()))
+        loop.run_until_complete(asyncio.ensure_future(vm.start()))
         assert vm.is_running()
         assert vm.command_line == ' '.join(mock_exec.call_args[0])
 
@@ -130,7 +130,7 @@ def test_start_with_iourc(loop, vm, tmpdir):
     with patch("gns3server.config.Config.get_section_config", return_value={"iourc_path": fake_file}):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=mock_process) as exec_mock:
             mock_process.returncode = None
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             assert vm.is_running()
             arsgs, kwargs = exec_mock.call_args
             assert kwargs["env"]["IOURC"] == fake_file
@@ -168,10 +168,10 @@ def test_stop(loop, vm):
 
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=process):
         with asyncio_patch("gns3server.utils.asyncio.wait_for_process_termination"):
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             process.returncode = None
             assert vm.is_running()
-            loop.run_until_complete(asyncio.async(vm.stop()))
+            loop.run_until_complete(asyncio.ensure_future(vm.stop()))
             assert vm.is_running() is False
             process.terminate.assert_called_with()
 
@@ -193,9 +193,9 @@ def test_reload(loop, vm, fake_iou_bin):
 
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=process):
         with asyncio_patch("gns3server.utils.asyncio.wait_for_process_termination"):
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             assert vm.is_running()
-            loop.run_until_complete(asyncio.async(vm.reload()))
+            loop.run_until_complete(asyncio.ensure_future(vm.reload()))
             assert vm.is_running() is True
             process.terminate.assert_called_with()
 
@@ -205,7 +205,7 @@ def test_close(vm, port_manager, loop):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()):
             vm.start()
             port = vm.console
-            loop.run_until_complete(asyncio.async(vm.close()))
+            loop.run_until_complete(asyncio.ensure_future(vm.close()))
             # Raise an exception if the port is not free
             port_manager.reserve_tcp_port(port, vm.project)
             assert vm.is_running() is False
@@ -250,7 +250,7 @@ def test_create_netmap_config(vm):
 
 def test_build_command(vm, loop):
 
-    assert loop.run_until_complete(asyncio.async(vm._build_command())) == [vm.path, str(vm.application_id)]
+    assert loop.run_until_complete(asyncio.ensure_future(vm._build_command())) == [vm.path, str(vm.application_id)]
 
 
 def test_get_startup_config(vm):
@@ -312,11 +312,11 @@ def test_library_check(loop, vm):
 
     with asyncio_patch("gns3server.utils.asyncio.subprocess_check_output", return_value="") as mock:
 
-        loop.run_until_complete(asyncio.async(vm._library_check()))
+        loop.run_until_complete(asyncio.ensure_future(vm._library_check()))
 
     with asyncio_patch("gns3server.utils.asyncio.subprocess_check_output", return_value="libssl => not found") as mock:
         with pytest.raises(IOUError):
-            loop.run_until_complete(asyncio.async(vm._library_check()))
+            loop.run_until_complete(asyncio.ensure_future(vm._library_check()))
 
 
 def test_enable_l1_keepalives(loop, vm):
@@ -324,14 +324,14 @@ def test_enable_l1_keepalives(loop, vm):
     with asyncio_patch("gns3server.utils.asyncio.subprocess_check_output", return_value="***************************************************************\n\n-l		Enable Layer 1 keepalive messages\n-u <n>		UDP port base for distributed networks\n") as mock:
 
         command = ["test"]
-        loop.run_until_complete(asyncio.async(vm._enable_l1_keepalives(command)))
+        loop.run_until_complete(asyncio.ensure_future(vm._enable_l1_keepalives(command)))
         assert command == ["test", "-l"]
 
     with asyncio_patch("gns3server.utils.asyncio.subprocess_check_output", return_value="***************************************************************\n\n-u <n>		UDP port base for distributed networks\n") as mock:
 
         command = ["test"]
         with pytest.raises(IOUError):
-            loop.run_until_complete(asyncio.async(vm._enable_l1_keepalives(command)))
+            loop.run_until_complete(asyncio.ensure_future(vm._enable_l1_keepalives(command)))
             assert command == ["test"]
 
 
@@ -339,8 +339,8 @@ def test_start_capture(vm, tmpdir, manager, free_console_port, loop):
 
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, 0, nio)))
-    loop.run_until_complete(asyncio.async(vm.start_capture(0, 0, output_file)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, 0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.start_capture(0, 0, output_file)))
     assert vm._adapters[0].get_nio(0).capturing
 
 
@@ -348,10 +348,10 @@ def test_stop_capture(vm, tmpdir, manager, free_console_port, loop):
 
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, 0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, 0, nio)))
     loop.run_until_complete(vm.start_capture(0, 0, output_file))
     assert vm._adapters[0].get_nio(0).capturing
-    loop.run_until_complete(asyncio.async(vm.stop_capture(0, 0)))
+    loop.run_until_complete(asyncio.ensure_future(vm.stop_capture(0, 0)))
     assert vm._adapters[0].get_nio(0).capturing is False
 
 
@@ -364,42 +364,42 @@ def test_invalid_iou_file(loop, vm, iourc_file):
 
     hostname = socket.gethostname()
 
-    loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+    loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Missing ;
     with pytest.raises(IOUError):
         with open(iourc_file, "w+") as f:
             f.write("[license]\n{} = aaaaaaaaaaaaaaaa".format(hostname))
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Key too short
     with pytest.raises(IOUError):
         with open(iourc_file, "w+") as f:
             f.write("[license]\n{} = aaaaaaaaaaaaaa;".format(hostname))
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Invalid hostname
     with pytest.raises(IOUError):
         with open(iourc_file, "w+") as f:
             f.write("[license]\nbla = aaaaaaaaaaaaaa;")
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Missing licence section
     with pytest.raises(IOUError):
         with open(iourc_file, "w+") as f:
             f.write("[licensetest]\n{} = aaaaaaaaaaaaaaaa;")
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Broken config file
     with pytest.raises(IOUError):
         with open(iourc_file, "w+") as f:
             f.write("[")
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
     # Missing file
     with pytest.raises(IOUError):
         os.remove(iourc_file)
-        loop.run_until_complete(asyncio.async(vm._check_iou_licence()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_iou_licence()))
 
 
 def test_iourc_content(vm):
diff --git a/tests/compute/qemu/test_qcow2.py b/tests/compute/qemu/test_qcow2.py
index 39084872..bf09e584 100644
--- a/tests/compute/qemu/test_qcow2.py
+++ b/tests/compute/qemu/test_qcow2.py
@@ -69,5 +69,5 @@ def test_rebase(tmpdir, loop):
     qcow2 = Qcow2(str(tmpdir / "linked.qcow2"))
     assert qcow2.version == 3
     assert qcow2.backing_file == "empty8G.qcow2"
-    loop.run_until_complete(asyncio.async(qcow2.rebase(qemu_img(), str(tmpdir / "empty16G.qcow2"))))
+    loop.run_until_complete(asyncio.ensure_future(qcow2.rebase(qemu_img(), str(tmpdir / "empty16G.qcow2"))))
     assert qcow2.backing_file == str(tmpdir / "empty16G.qcow2")
diff --git a/tests/compute/qemu/test_qemu_manager.py b/tests/compute/qemu/test_qemu_manager.py
index e0955556..163377e1 100644
--- a/tests/compute/qemu/test_qemu_manager.py
+++ b/tests/compute/qemu/test_qemu_manager.py
@@ -41,7 +41,7 @@ def fake_qemu_img_binary(tmpdir):
 def test_get_qemu_version(loop):
 
     with asyncio_patch("gns3server.compute.qemu.subprocess_check_output", return_value="QEMU emulator version 2.2.0, Copyright (c) 2003-2008 Fabrice Bellard") as mock:
-        version = loop.run_until_complete(asyncio.async(Qemu.get_qemu_version("/tmp/qemu-test")))
+        version = loop.run_until_complete(asyncio.ensure_future(Qemu.get_qemu_version("/tmp/qemu-test")))
         if sys.platform.startswith("win"):
             assert version == ""
         else:
@@ -64,7 +64,7 @@ def test_binary_list(loop):
         else:
             version = "2.2.0"
 
-        qemus = loop.run_until_complete(asyncio.async(Qemu.binary_list()))
+        qemus = loop.run_until_complete(asyncio.ensure_future(Qemu.binary_list()))
 
         assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
         assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} in qemus
@@ -72,14 +72,14 @@ def test_binary_list(loop):
         assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
         assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86_64-spice"), "version": version} not in qemus
 
-        qemus = loop.run_until_complete(asyncio.async(Qemu.binary_list(["x86"])))
+        qemus = loop.run_until_complete(asyncio.ensure_future(Qemu.binary_list(["x86"])))
 
         assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
         assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} not in qemus
         assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x42"), "version": version} not in qemus
         assert {"path": os.path.join(os.environ["PATH"], "hello"), "version": version} not in qemus
 
-        qemus = loop.run_until_complete(asyncio.async(Qemu.binary_list(["x86", "x42"])))
+        qemus = loop.run_until_complete(asyncio.ensure_future(Qemu.binary_list(["x86", "x42"])))
 
         assert {"path": os.path.join(os.environ["PATH"], "qemu-system-x86"), "version": version} in qemus
         assert {"path": os.path.join(os.environ["PATH"], "qemu-kvm"), "version": version} not in qemus
@@ -98,7 +98,7 @@ def test_img_binary_list(loop):
         os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
 
     with asyncio_patch("gns3server.compute.qemu.subprocess_check_output", return_value="qemu-img version 2.2.0, Copyright (c) 2004-2008 Fabrice Bellard") as mock:
-        qemus = loop.run_until_complete(asyncio.async(Qemu.img_binary_list()))
+        qemus = loop.run_until_complete(asyncio.ensure_future(Qemu.img_binary_list()))
 
         version = "2.2.0"
 
@@ -125,7 +125,7 @@ def test_create_image_abs_path(loop, tmpdir, fake_qemu_img_binary):
         "size": 100
     }
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        loop.run_until_complete(asyncio.async(Qemu.instance().create_disk(fake_qemu_img_binary, str(tmpdir / "hda.qcow2"), options)))
+        loop.run_until_complete(asyncio.ensure_future(Qemu.instance().create_disk(fake_qemu_img_binary, str(tmpdir / "hda.qcow2"), options)))
         args, kwargs = process.call_args
         assert args == (
             fake_qemu_img_binary,
@@ -152,7 +152,7 @@ def test_create_image_relative_path(loop, tmpdir, fake_qemu_img_binary):
     }
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
         with patch("gns3server.compute.qemu.Qemu.get_images_directory", return_value=str(tmpdir)):
-            loop.run_until_complete(asyncio.async(Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)))
+            loop.run_until_complete(asyncio.ensure_future(Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)))
             args, kwargs = process.call_args
             assert args == (
                 fake_qemu_img_binary,
@@ -174,7 +174,7 @@ def test_create_image_exist(loop, tmpdir, fake_qemu_img_binary):
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
         with patch("gns3server.compute.qemu.Qemu.get_images_directory", return_value=str(tmpdir)):
             with pytest.raises(QemuError):
-                loop.run_until_complete(asyncio.async(Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)))
+                loop.run_until_complete(asyncio.ensure_future(Qemu.instance().create_disk(fake_qemu_img_binary, "hda.qcow2", options)))
                 assert not process.called
 
 
@@ -193,7 +193,7 @@ def test_create_image_with_not_supported_characters_by_filesystem(loop, tmpdir,
             patch("os.makedirs"):
 
         with pytest.raises(QemuError):
-            loop.run_until_complete(asyncio.async(Qemu.instance().create_disk(
+            loop.run_until_complete(asyncio.ensure_future(Qemu.instance().create_disk(
                 fake_qemu_img_binary, "hda.qcow2", options)))
             assert not process.called
 
@@ -201,12 +201,12 @@ def test_create_image_with_not_supported_characters_by_filesystem(loop, tmpdir,
 def test_get_kvm_archs_kvm_ok(loop):
 
     with patch("os.path.exists", return_value=True):
-        archs = loop.run_until_complete(asyncio.async(Qemu.get_kvm_archs()))
+        archs = loop.run_until_complete(asyncio.ensure_future(Qemu.get_kvm_archs()))
         if platform.machine() == 'x86_64':
             assert archs == ['x86_64', 'i386']
         else:
             assert archs == [platform.machine()]
 
     with patch("os.path.exists", return_value=False):
-        archs = loop.run_until_complete(asyncio.async(Qemu.get_kvm_archs()))
+        archs = loop.run_until_complete(asyncio.ensure_future(Qemu.get_kvm_archs()))
         assert archs == []
diff --git a/tests/compute/qemu/test_qemu_vm.py b/tests/compute/qemu/test_qemu_vm.py
index 0b4fc227..90347176 100644
--- a/tests/compute/qemu/test_qemu_vm.py
+++ b/tests/compute/qemu/test_qemu_vm.py
@@ -118,7 +118,7 @@ def test_is_running(vm, running_subprocess_mock):
 def test_start(loop, vm, running_subprocess_mock):
     with asyncio_patch("gns3server.compute.qemu.QemuVM.start_wrap_console"):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=running_subprocess_mock) as mock:
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             assert vm.is_running()
             assert vm.command_line == ' '.join(mock.call_args[0])
 
@@ -135,9 +135,9 @@ def test_stop(loop, vm, running_subprocess_mock):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=process):
             nio = Qemu.instance().create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1"})
             vm.adapter_add_nio_binding(0, nio)
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             assert vm.is_running()
-            loop.run_until_complete(asyncio.async(vm.stop()))
+            loop.run_until_complete(asyncio.ensure_future(vm.stop()))
             assert vm.is_running() is False
             process.terminate.assert_called_with()
 
@@ -184,7 +184,7 @@ def test_termination_callback_error(vm, tmpdir, async_run):
 def test_reload(loop, vm):
 
     with asyncio_patch("gns3server.compute.qemu.QemuVM._control_vm") as mock:
-        loop.run_until_complete(asyncio.async(vm.reload()))
+        loop.run_until_complete(asyncio.ensure_future(vm.reload()))
         assert mock.called_with("system_reset")
 
 
@@ -193,33 +193,33 @@ def test_suspend(loop, vm):
     control_vm_result = MagicMock()
     control_vm_result.match.group.decode.return_value = "running"
     with asyncio_patch("gns3server.compute.qemu.QemuVM._control_vm", return_value=control_vm_result) as mock:
-        loop.run_until_complete(asyncio.async(vm.suspend()))
+        loop.run_until_complete(asyncio.ensure_future(vm.suspend()))
         assert mock.called_with("system_reset")
 
 
 def test_add_nio_binding_udp(vm, loop):
     nio = Qemu.instance().create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1", "filters": {}})
     assert nio.lport == 4242
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
     assert nio.lport == 4242
 
 
 
 def test_port_remove_nio_binding(vm, loop):
     nio = Qemu.instance().create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1", "filters": {}})
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
-    loop.run_until_complete(asyncio.async(vm.adapter_remove_nio_binding(0)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_remove_nio_binding(0)))
     assert vm._ethernet_adapters[0].ports[0] is None
 
 
 def test_close(vm, port_manager, loop):
     with asyncio_patch("gns3server.compute.qemu.QemuVM.start_wrap_console"):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()):
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
 
             console_port = vm.console
 
-            loop.run_until_complete(asyncio.async(vm.close()))
+            loop.run_until_complete(asyncio.ensure_future(vm.close()))
 
             # Raise an exception if the port is not free
             port_manager.reserve_tcp_port(console_port, vm.project)
@@ -328,7 +328,7 @@ def test_disk_options(vm, tmpdir, loop, fake_qemu_img_binary):
     open(vm._hda_disk_image, "w+").close()
 
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        options = loop.run_until_complete(asyncio.async(vm._disk_options()))
+        options = loop.run_until_complete(asyncio.ensure_future(vm._disk_options()))
         assert process.called
         args, kwargs = process.call_args
         assert args == (fake_qemu_img_binary, "create", "-o", "backing_file={}".format(vm._hda_disk_image), "-f", "qcow2", os.path.join(vm.working_dir, "hda_disk.qcow2"))
@@ -341,7 +341,7 @@ def test_cdrom_option(vm, tmpdir, loop, fake_qemu_img_binary):
     vm._cdrom_image = str(tmpdir / "test.iso")
     open(vm._cdrom_image, "w+").close()
 
-    options = loop.run_until_complete(asyncio.async(vm._build_command()))
+    options = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
 
     assert ' '.join(['-cdrom', str(tmpdir / "test.iso")]) in ' '.join(options)
 
@@ -351,7 +351,7 @@ def test_bios_option(vm, tmpdir, loop, fake_qemu_img_binary):
     vm._bios_image = str(tmpdir / "test.img")
     open(vm._bios_image, "w+").close()
 
-    options = loop.run_until_complete(asyncio.async(vm._build_command()))
+    options = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
 
     assert ' '.join(['-bios', str(tmpdir / "test.img")]) in ' '.join(options)
 
@@ -359,14 +359,14 @@ def test_bios_option(vm, tmpdir, loop, fake_qemu_img_binary):
 def test_vnc_option(vm, tmpdir, loop, fake_qemu_img_binary):
     vm._console_type = 'vnc'
     vm._console = 5905
-    options = loop.run_until_complete(asyncio.async(vm._build_command()))
+    options = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
     assert '-vnc 127.0.0.1:5' in ' '.join(options)
 
 
 def test_spice_option(vm, tmpdir, loop, fake_qemu_img_binary):
     vm._console_type = 'spice'
     vm._console = 5905
-    options = loop.run_until_complete(asyncio.async(vm._build_command()))
+    options = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
     assert '-spice addr=127.0.0.1,port=5905,disable-ticketing' in ' '.join(options)
     assert '-vga qxl' in ' '.join(options)
 
@@ -383,7 +383,7 @@ def test_disk_options_multiple_disk(vm, tmpdir, loop, fake_qemu_img_binary):
     open(vm._hdd_disk_image, "w+").close()
 
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        options = loop.run_until_complete(asyncio.async(vm._disk_options()))
+        options = loop.run_until_complete(asyncio.ensure_future(vm._disk_options()))
 
     assert options == [
         '-drive', 'file=' + os.path.join(vm.working_dir, "hda_disk.qcow2") + ',if=ide,index=0,media=disk',
@@ -400,7 +400,7 @@ def test_set_process_priority(vm, loop, fake_qemu_img_binary):
         vm._process = MagicMock()
         vm._process.pid = 42
         vm._process_priority = "low"
-        loop.run_until_complete(asyncio.async(vm._set_process_priority()))
+        loop.run_until_complete(asyncio.ensure_future(vm._set_process_priority()))
         assert process.called
         args, kwargs = process.call_args
         assert args == ("renice", "-n", "5", "-p", "42")
@@ -412,7 +412,7 @@ def test_set_process_priority_normal(vm, loop, fake_qemu_img_binary):
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
         vm._process = MagicMock()
         vm._process.pid = 42
-        loop.run_until_complete(asyncio.async(vm._set_process_priority()))
+        loop.run_until_complete(asyncio.ensure_future(vm._set_process_priority()))
         assert not process.called
 
 
@@ -429,7 +429,7 @@ def test_control_vm(vm, loop):
     reader = MagicMock()
     writer = MagicMock()
     with asyncio_patch("asyncio.open_connection", return_value=(reader, writer)) as open_connect:
-        res = loop.run_until_complete(asyncio.async(vm._control_vm("test")))
+        res = loop.run_until_complete(asyncio.ensure_future(vm._control_vm("test")))
         assert writer.write.called_with("test")
     assert res is None
 
@@ -446,7 +446,7 @@ def test_control_vm_expect_text(vm, loop, running_subprocess_mock):
         reader.readline.return_value = future
 
         vm._monitor = 4242
-        res = loop.run_until_complete(asyncio.async(vm._control_vm("test", [b"epic"])))
+        res = loop.run_until_complete(asyncio.ensure_future(vm._control_vm("test", [b"epic"])))
         assert writer.write.called_with("test")
 
     assert res == "epic product"
@@ -456,7 +456,7 @@ def test_build_command(vm, loop, fake_qemu_binary, port_manager):
 
     os.environ["DISPLAY"] = "0:0"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         nio = vm._local_udp_tunnels[0][0]
         assert cmd == [
             fake_qemu_binary,
@@ -489,7 +489,7 @@ def test_build_command_manual_uuid(vm, loop, fake_qemu_binary, port_manager):
     vm.options = "-uuid e1c307a4-896f-11e6-81a5-3c07547807cc"
     os.environ["DISPLAY"] = "0:0"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         assert "e1c307a4-896f-11e6-81a5-3c07547807cc" in cmd
         assert vm.id not in cmd
 
@@ -502,7 +502,7 @@ def test_build_command_kvm(linux_platform, vm, loop, fake_qemu_binary, port_mana
     vm.manager.get_qemu_version = AsyncioMagicMock(return_value="2.3.2")
     os.environ["DISPLAY"] = "0:0"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         nio = vm._local_udp_tunnels[0][0]
         assert cmd == [
             fake_qemu_binary,
@@ -536,7 +536,7 @@ def test_build_command_kvm_2_4(linux_platform, vm, loop, fake_qemu_binary, port_
     vm.manager.get_qemu_version = AsyncioMagicMock(return_value="2.4.2")
     os.environ["DISPLAY"] = "0:0"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         nio = vm._local_udp_tunnels[0][0]
         assert cmd == [
             fake_qemu_binary,
@@ -569,7 +569,7 @@ def test_build_command_without_display(vm, loop, fake_qemu_binary):
 
     os.environ["DISPLAY"] = ""
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         assert "-nographic" in cmd
 
 
@@ -578,7 +578,7 @@ def test_build_command_two_adapters(vm, loop, fake_qemu_binary, port_manager):
     os.environ["DISPLAY"] = "0:0"
     vm.adapters = 2
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         nio1 = vm._local_udp_tunnels[0][0]
         nio2 = vm._local_udp_tunnels[1][0]
         assert cmd == [
@@ -619,7 +619,7 @@ def test_build_command_two_adapters_mac_address(vm, loop, fake_qemu_binary, port
     mac_1 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 1)
     assert mac_0[:8] == "00:00:ab"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         assert "e1000,mac={},netdev=gns3-0".format(mac_0) in cmd
         assert "e1000,mac={},netdev=gns3-1".format(mac_1) in cmd
 
@@ -628,7 +628,7 @@ def test_build_command_two_adapters_mac_address(vm, loop, fake_qemu_binary, port
     mac_1 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 1)
     assert mac_0[:8] == "00:42:ab"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
         assert "e1000,mac={},netdev=gns3-0".format(mac_0) in cmd
         assert "e1000,mac={},netdev=gns3-1".format(mac_1) in cmd
 
@@ -648,7 +648,7 @@ def test_build_command_large_number_of_adapters(vm, loop, fake_qemu_binary, port
     mac_1 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 1)
     assert mac_0[:8] == "00:00:ab"
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
 
     # Count if we have 100 e1000 adapters in the command
     assert len([l for l in cmd if "e1000" in l ]) == 100
@@ -672,10 +672,10 @@ def test_build_command_large_number_of_adapters(vm, loop, fake_qemu_binary, port
     vm.manager.get_qemu_version = AsyncioMagicMock(return_value="2.0.0")
     with pytest.raises(QemuError):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-            cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+            cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
     vm.adapters = 5
     with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
 
 # Windows accept this kind of mistake
 
@@ -685,7 +685,7 @@ def test_build_command_with_invalid_options(vm, loop, fake_qemu_binary):
 
     vm.options = "'test"
     with pytest.raises(QemuError):
-        cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
+        cmd = loop.run_until_complete(asyncio.ensure_future(vm._build_command()))
 
 
 def test_hda_disk_image(vm, images_dir):
diff --git a/tests/compute/test_base_node.py b/tests/compute/test_base_node.py
index cfc39872..4a61c5ad 100644
--- a/tests/compute/test_base_node.py
+++ b/tests/compute/test_base_node.py
@@ -83,7 +83,7 @@ def test_close(node, loop, port_manager):
 
     node.aux = aux
     port = node.console
-    assert loop.run_until_complete(asyncio.async(node.close()))
+    assert loop.run_until_complete(asyncio.ensure_future(node.close()))
     # Raise an exception if the port is not free
     port_manager.reserve_tcp_port(port, node.project)
     # Raise an exception if the port is not free
@@ -92,7 +92,7 @@ def test_close(node, loop, port_manager):
     assert node.aux is None
 
     # Called twice closed should return False
-    assert loop.run_until_complete(asyncio.async(node.close())) is False
+    assert loop.run_until_complete(asyncio.ensure_future(node.close())) is False
 
 
 def test_aux(project, manager, port_manager):
diff --git a/tests/compute/test_project.py b/tests/compute/test_project.py
index 1b349354..ae3cf0b0 100644
--- a/tests/compute/test_project.py
+++ b/tests/compute/test_project.py
@@ -43,7 +43,7 @@ def manager(port_manager):
 @pytest.fixture(scope="function")
 def node(project, manager, loop):
     node = manager.create_node("test", project.id, "00010203-0405-0607-0809-0a0b0c0d0e0f")
-    return loop.run_until_complete(asyncio.async(node))
+    return loop.run_until_complete(asyncio.ensure_future(node))
 
 
 def test_affect_uuid():
@@ -120,7 +120,7 @@ def test_project_delete(loop):
     project = Project(project_id=str(uuid4()))
     directory = project.path
     assert os.path.exists(directory)
-    loop.run_until_complete(asyncio.async(project.delete()))
+    loop.run_until_complete(asyncio.ensure_future(project.delete()))
     assert os.path.exists(directory) is False
 
 
@@ -130,7 +130,7 @@ def test_project_delete_permission_issue(loop):
     assert os.path.exists(directory)
     os.chmod(directory, 0)
     with pytest.raises(aiohttp.web.HTTPInternalServerError):
-        loop.run_until_complete(asyncio.async(project.delete()))
+        loop.run_until_complete(asyncio.ensure_future(project.delete()))
     os.chmod(directory, 700)
 
 
@@ -144,7 +144,7 @@ def test_project_add_node(manager):
 def test_project_close(loop, node, project):
 
     with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.VPCSVM.close") as mock:
-        loop.run_until_complete(asyncio.async(project.close()))
+        loop.run_until_complete(asyncio.ensure_future(project.close()))
         assert mock.called
     assert node.id not in node.manager._nodes
 
@@ -161,7 +161,7 @@ def test_list_files(tmpdir, loop):
         with open(os.path.join(path, "test.txt"), "w+") as f:
             f.write("test2")
 
-        files = loop.run_until_complete(asyncio.async(project.list_files()))
+        files = loop.run_until_complete(asyncio.ensure_future(project.list_files()))
 
         assert files == [
             {
diff --git a/tests/compute/virtualbox/test_virtualbox_manager.py b/tests/compute/virtualbox/test_virtualbox_manager.py
index 097185e2..15d0ce4e 100644
--- a/tests/compute/virtualbox/test_virtualbox_manager.py
+++ b/tests/compute/virtualbox/test_virtualbox_manager.py
@@ -92,7 +92,7 @@ def test_list_vms(manager, loop):
 
     with asyncio_patch("gns3server.compute.virtualbox.VirtualBox.execute") as mock:
         mock.side_effect = execute_mock
-        vms = loop.run_until_complete(asyncio.async(manager.list_vms()))
+        vms = loop.run_until_complete(asyncio.ensure_future(manager.list_vms()))
     assert vms == [
         {"vmname": "Windows 8.1", "ram": 512},
         {"vmname": "Linux Microcore 4.7.1", "ram": 256}
diff --git a/tests/compute/virtualbox/test_virtualbox_vm.py b/tests/compute/virtualbox/test_virtualbox_vm.py
index 8e6e3136..e3e44525 100644
--- a/tests/compute/virtualbox/test_virtualbox_vm.py
+++ b/tests/compute/virtualbox/test_virtualbox_vm.py
@@ -75,20 +75,20 @@ def test_rename_vmname(project, manager, async_run):
 def test_vm_valid_virtualbox_api_version(loop, project, manager):
     with asyncio_patch("gns3server.compute.virtualbox.VirtualBox.execute", return_value=["API version:  4_3"]):
         vm = VirtualBoxVM("test", "00010203-0405-0607-0809-0a0b0c0d0e0f", project, manager, "test", False)
-        loop.run_until_complete(asyncio.async(vm.create()))
+        loop.run_until_complete(asyncio.ensure_future(vm.create()))
 
 
 def test_vm_invalid_virtualbox_api_version(loop, project, manager):
     with asyncio_patch("gns3server.compute.virtualbox.VirtualBox.execute", return_value=["API version:  4_2"]):
         with pytest.raises(VirtualBoxError):
             vm = VirtualBoxVM("test", "00010203-0405-0607-0809-0a0b0c0d0e0f", project, manager, "test", False)
-            loop.run_until_complete(asyncio.async(vm.create()))
+            loop.run_until_complete(asyncio.ensure_future(vm.create()))
 
 
 def test_vm_adapter_add_nio_binding_adapter_not_exist(loop, vm, manager, free_console_port):
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
     with pytest.raises(VirtualBoxError):
-        loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(15, nio)))
+        loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(15, nio)))
 
 
 def test_json(vm, tmpdir, project):
diff --git a/tests/compute/vmware/test_vmware_vm.py b/tests/compute/vmware/test_vmware_vm.py
index 1b7747a7..fce5d58f 100644
--- a/tests/compute/vmware/test_vmware_vm.py
+++ b/tests/compute/vmware/test_vmware_vm.py
@@ -56,8 +56,8 @@ def test_start_capture(vm, tmpdir, manager, free_console_port, loop):
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
     vm.adapters = 1
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
-    loop.run_until_complete(asyncio.async(vm.start_capture(0, output_file)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.start_capture(0, output_file)))
     assert vm._ethernet_adapters[0].get_nio(0).capturing
 
 
@@ -66,8 +66,8 @@ def test_stop_capture(vm, tmpdir, manager, free_console_port, loop):
     output_file = str(tmpdir / "test.pcap")
     nio = manager.create_nio({"type": "nio_udp", "lport": free_console_port, "rport": free_console_port, "rhost": "127.0.0.1"})
     vm.adapters = 1
-    loop.run_until_complete(asyncio.async(vm.adapter_add_nio_binding(0, nio)))
+    loop.run_until_complete(asyncio.ensure_future(vm.adapter_add_nio_binding(0, nio)))
     loop.run_until_complete(vm.start_capture(0, output_file))
     assert vm._ethernet_adapters[0].get_nio(0).capturing
-    loop.run_until_complete(asyncio.async(vm.stop_capture(0)))
+    loop.run_until_complete(asyncio.ensure_future(vm.stop_capture(0)))
     assert vm._ethernet_adapters[0].get_nio(0).capturing is False
diff --git a/tests/compute/vpcs/test_vpcs_vm.py b/tests/compute/vpcs/test_vpcs_vm.py
index 68e0a49e..f7862516 100644
--- a/tests/compute/vpcs/test_vpcs_vm.py
+++ b/tests/compute/vpcs/test_vpcs_vm.py
@@ -56,13 +56,13 @@ def test_vm(project, manager):
 
 def test_vm_check_vpcs_version(loop, vm, manager):
     with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.subprocess_check_output", return_value="Welcome to Virtual PC Simulator, version 0.9"):
-        loop.run_until_complete(asyncio.async(vm._check_vpcs_version()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_vpcs_version()))
         assert vm._vpcs_version == parse_version("0.9")
 
 
 def test_vm_check_vpcs_version_0_6_1(loop, vm, manager):
     with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.subprocess_check_output", return_value="Welcome to Virtual PC Simulator, version 0.6.1"):
-        loop.run_until_complete(asyncio.async(vm._check_vpcs_version()))
+        loop.run_until_complete(asyncio.ensure_future(vm._check_vpcs_version()))
         assert vm._vpcs_version == parse_version("0.6.1")
 
 
@@ -71,7 +71,7 @@ def test_vm_invalid_vpcs_version(loop, manager, vm):
         with pytest.raises(VPCSError):
             nio = manager.create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1", "filters": {}})
             vm.port_add_nio_binding(0, nio)
-            loop.run_until_complete(asyncio.async(vm._check_vpcs_version()))
+            loop.run_until_complete(asyncio.ensure_future(vm._check_vpcs_version()))
             assert vm.name == "test"
             assert vm.id == "00010203-0405-0607-0809-0a0b0c0d0e0f"
 
@@ -81,7 +81,7 @@ def test_vm_invalid_vpcs_path(vm, manager, loop):
         with pytest.raises(VPCSError):
             nio = manager.create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1"})
             vm.port_add_nio_binding(0, nio)
-            loop.run_until_complete(asyncio.async(vm.start()))
+            loop.run_until_complete(asyncio.ensure_future(vm.start()))
             assert vm.name == "test"
             assert vm.id == "00010203-0405-0607-0809-0a0b0c0d0e0e"
 
@@ -96,7 +96,7 @@ def test_start(loop, vm, async_run):
         with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.VPCSVM._check_requirements", return_value=True):
             with asyncio_patch("asyncio.create_subprocess_exec", return_value=process) as mock_exec:
                 with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.VPCSVM.start_wrap_console"):
-                    loop.run_until_complete(asyncio.async(vm.start()))
+                    loop.run_until_complete(asyncio.ensure_future(vm.start()))
                     assert mock_exec.call_args[0] == (vm._vpcs_path(),
                                                       '-p',
                                                       str(vm._internal_console_port),
@@ -169,7 +169,7 @@ def test_stop(loop, vm, async_run):
                     assert vm.is_running()
 
                     with asyncio_patch("gns3server.utils.asyncio.wait_for_process_termination"):
-                        loop.run_until_complete(asyncio.async(vm.stop()))
+                        loop.run_until_complete(asyncio.ensure_future(vm.stop()))
                     assert vm.is_running() is False
 
                     if sys.platform.startswith("win"):
@@ -300,5 +300,5 @@ def test_close(vm, port_manager, loop):
     with asyncio_patch("gns3server.compute.vpcs.vpcs_vm.VPCSVM._check_requirements", return_value=True):
         with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()):
             vm.start()
-            loop.run_until_complete(asyncio.async(vm.close()))
+            loop.run_until_complete(asyncio.ensure_future(vm.close()))
             assert vm.is_running() is False
diff --git a/tests/conftest.py b/tests/conftest.py
index 587c675d..da83b431 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -314,7 +314,7 @@ def async_run(loop):
     """
     Shortcut for running in asyncio loop
     """
-    return lambda x: loop.run_until_complete(asyncio.async(x))
+    return lambda x: loop.run_until_complete(asyncio.ensure_future(x))
 
 
 @pytest.yield_fixture
diff --git a/tests/handlers/api/base.py b/tests/handlers/api/base.py
index 91109c00..e71505ae 100644
--- a/tests/handlers/api/base.py
+++ b/tests/handlers/api/base.py
@@ -74,7 +74,7 @@ class Query:
             response = yield from self._session.ws_connect(self.get_url(path))
             future.set_result(response)
         future = asyncio.Future()
-        asyncio.async(go_request(future))
+        asyncio.ensure_future(go_request(future))
         self._loop.run_until_complete(future)
         return future.result()
 
@@ -85,7 +85,7 @@ class Query:
             - example if True the session is included inside documentation
             - raw do not JSON encode the query
         """
-        return self._loop.run_until_complete(asyncio.async(self._async_fetch(method, path, body=body, **kwargs)))
+        return self._loop.run_until_complete(asyncio.ensure_future(self._async_fetch(method, path, body=body, **kwargs)))
 
     @asyncio.coroutine
     def _async_fetch(self, method, path, body=None, **kwargs):
diff --git a/tests/handlers/api/controller/test_link.py b/tests/handlers/api/controller/test_link.py
index 7a938d4f..e615281f 100644
--- a/tests/handlers/api/controller/test_link.py
+++ b/tests/handlers/api/controller/test_link.py
@@ -356,7 +356,7 @@ def test_pcap(http_controller, tmpdir, project, compute, loop):
     project._links = {link.id: link}
 
     future = asyncio.Future()
-    asyncio.async(go(future))
+    asyncio.ensure_future(go(future))
     response = loop.run_until_complete(future)
     assert response.status == 200
     assert b'hello' == response.body
diff --git a/tests/handlers/api/controller/test_project.py b/tests/handlers/api/controller/test_project.py
index e75511c5..263fd8db 100644
--- a/tests/handlers/api/controller/test_project.py
+++ b/tests/handlers/api/controller/test_project.py
@@ -140,7 +140,7 @@ def test_notification(http_controller, project, controller, loop, async_run):
         response.close()
         return response
 
-    response = async_run(asyncio.async(go()))
+    response = async_run(asyncio.ensure_future(go()))
     assert response.status == 200
     assert b'"action": "ping"' in response.body
     assert b'"cpu_usage_percent"' in response.body
diff --git a/tests/utils/test_asyncio.py b/tests/utils/test_asyncio.py
index 0e4e3c48..942bf455 100644
--- a/tests/utils/test_asyncio.py
+++ b/tests/utils/test_asyncio.py
@@ -31,7 +31,7 @@ def test_wait_run_in_executor(loop):
         return param
 
     exec = wait_run_in_executor(change_var, "test")
-    result = loop.run_until_complete(asyncio.async(exec))
+    result = loop.run_until_complete(asyncio.ensure_future(exec))
     assert result == "test"
 
 
@@ -42,7 +42,7 @@ def test_exception_wait_run_in_executor(loop):
 
     exec = wait_run_in_executor(raise_exception)
     with pytest.raises(Exception):
-        result = loop.run_until_complete(asyncio.async(exec))
+        result = loop.run_until_complete(asyncio.ensure_future(exec))
 
 
 @pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
@@ -52,7 +52,7 @@ def test_subprocess_check_output(loop, tmpdir, restore_original_path):
     with open(path, "w+") as f:
         f.write("TEST")
     exec = subprocess_check_output("cat", path)
-    result = loop.run_until_complete(asyncio.async(exec))
+    result = loop.run_until_complete(asyncio.ensure_future(exec))
     assert result == "TEST"
 
 
@@ -64,13 +64,13 @@ def test_wait_for_process_termination(loop):
     process = MagicMock()
     process.returncode = 0
     exec = wait_for_process_termination(process)
-    loop.run_until_complete(asyncio.async(exec))
+    loop.run_until_complete(asyncio.ensure_future(exec))
 
     process = MagicMock()
     process.returncode = None
     exec = wait_for_process_termination(process, timeout=0.5)
     with pytest.raises(asyncio.TimeoutError):
-        loop.run_until_complete(asyncio.async(exec))
+        loop.run_until_complete(asyncio.ensure_future(exec))
 
 
 def test_lock_decorator(loop):