diff --git a/test-requirements.txt b/test-requirements.txt
index 79f8b5db..b8ead0a2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@ Babel!=2.4.0,>=2.3.4 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 httplib2>=0.7.5 # MIT
-mock>=2.0 # BSD
+mock>=2.0.0 # BSD
 mox>=0.5.3 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 os-testr>=0.8.0 # Apache-2.0