diff --git a/setup.py b/setup.py
index 94a67020d2..9977556759 100644
--- a/setup.py
+++ b/setup.py
@@ -83,6 +83,7 @@ djangorestframework-recursive==0.1.1
 furl==1.0.0
 fusepy==2.0.4
 graphviz==0.8
+mock==2.0.0
 pycountry==1.20
 PyPDF2==1.26.0
 pyocr==0.4.5