diff --git a/test-requirements.txt b/test-requirements.txt
index 25dddae..73b54ed 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
-mock>=2.0 # BSD
+mock>=2.0.0 # BSD
 mox>=0.5.3 # Apache-2.0
 mox3!=0.19.0,>=0.7.0 # Apache-2.0
 oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0