diff --git a/test-requirements.txt b/test-requirements.txt
index 3d419da..0c85358 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@
 
 Pillow>=2.4.0 # MIT
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2
-mock>=1.1;python_version!='2.6'
+mock!=1.1.4,>=1.1;python_version!='2.6'
 mock==1.0.1;python_version=='2.6'
 coverage>=3.6
 testrepository>=0.0.18