diff --git a/CHANGELOG b/CHANGELOG
index 5428e622..5eaf7954 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,27 @@
 # Change Log
 
+## 1.5.3 rc1 20/12/2016
+
+* Support aiohttp 1.2 (but not compatible with previous versions)
+* Explain that segfault on IOU is a issue with the image
+* Fix an issue with finding vmrun and vboxmanage
+* Support named remote servers for VPCS
+* When checking for a free port check if the host and 0.0.0.0 are available
+* smm=off is only for 64bits
+* Fix set hostname on remote server
+* Fix sending smm option to qemu
+* Workaround a bug with KVM, Qemu >= 2.4 and Intel CPU
+* Renable sleep at Vbox exit bug seem to be back
+* Support large project (> 2GB) during export
+* Fix Deleting running telnet docker VM shows error in log
+* Fix when closing a container using VNC, root permission are not reset
+* Use $PATH also for dynamips and cleanup some $PATH usages
+* Fix a lock issue with some virtualbox vm
+* Raise proper error when you try to load an empty qcow2 file
+* Fix upload form crash
+* Search bin from the $PATH for sample configuration file
+* Updated systemd unit file and added sample configuration file
+
 ## 1.5.2 18/08/2016
 
 * Move utils.vmnet to gns3 namespace
diff --git a/gns3server/crash_report.py b/gns3server/crash_report.py
index 60981e4c..0c9ba5c1 100644
--- a/gns3server/crash_report.py
+++ b/gns3server/crash_report.py
@@ -52,7 +52,7 @@ class CrashReport:
     Report crash to a third party service
     """
 
-    DSN = "sync+https://76659dafd45f4e3f8ca0ae7597eac70b:dc0094ac9ae44fe1beacc1e37b2f6041@app.getsentry.com/38482"
+    DSN = "sync+https://0c6db11c99c2411390264f331901840d:065cbfcd3ad5466aa8b8260fc7a1f976@sentry.io/38482"
     if hasattr(sys, "frozen"):
         cacert = get_resource("cacert.pem")
         if cacert is not None and os.path.isfile(cacert):
diff --git a/gns3server/version.py b/gns3server/version.py
index 0cd03447..85304e23 100644
--- a/gns3server/version.py
+++ b/gns3server/version.py
@@ -23,5 +23,5 @@
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
 
-__version__ = "1.5.3dev1"
+__version__ = "1.5.3rc1"
 __version_info__ = (1, 5, 3, -99)