diff --git a/test-requirements.txt b/test-requirements.txt
index fe65457f372..6cc4f9fd8e4 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 #
 
 nose
-mock
+mock >= 1.0.1, < 1.1
 passlib
 coverage
 coveralls