diff --git a/dev-requirements.txt b/dev-requirements.txt
index efb4e7a0..4647398d 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,5 @@
 -rrequirements.txt
 
-pytest
-ws4py
+Sphinx==1.2.3
+pytest==2.6.4
+ws4py==0.3.4
diff --git a/requirements.txt b/requirements.txt
index 0cb66af9..a7f54074 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
-netifaces
-jsonschema
-pycurl
-python-dateutil
-apache-libcloud
-requests
+netifaces==0.10.4
+jsonschema==2.4.0
+pycurl==7.19.5
+python-dateutil==2.3
+apache-libcloud==0.16.0
+requests==2.5.0
+aiohttp==0.13.1