diff --git a/test-requirements.txt b/test-requirements.txt
index 6082835ee..f7c72f8df 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,7 +6,7 @@ hacking>=0.10.0,<0.11
 coverage>=3.6
 discover
 fixtures>=0.3.14
-mock>=1.0
+mock<=1.0.99
 oslosphinx>=2.2.0  # Apache-2.0
 sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
 testrepository>=0.0.18