diff --git a/test-requirements.txt b/test-requirements.txt
index 89de50f..6394a9c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -10,4 +10,4 @@ sphinx>=1.6.2 # BSD
 openstackdocstheme>=1.16.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
-mock>=2.0 # BSD
+mock>=2.0.0 # BSD