diff --git a/tox.ini b/tox.ini
index 3f77f95..902d99d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ basepython =
     py33: python3.3
     py34: python3.4
 deps =
+    coverage==3.7.1
     coveralls
     django14: Django>=1.4,<1.5
     django15: Django>=1.5,<1.6