diff --git a/dev-requirements.txt b/dev-requirements.txt
index 83291f4e01a..9faef5cef58 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -5,7 +5,7 @@ coveralls==1.1
 docutils==0.12
 factory-boy==2.1.1
 httpretty==0.8.3
-mock==1.0.1
+mock==2.0.0
 pep8==1.4.6
 pip-tools==1.1.2
 polib==1.0.3