diff --git a/test-requirements.txt b/test-requirements.txt
index ed444996..90977207 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@ hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-mock>=2.0 # BSD
+mock>=2.0.0 # BSD
 nose # LGPL
 oslotest>=1.10.0 # Apache-2.0
 pylint==1.4.5 # GPLv2