diff --git a/tox.ini b/tox.ini
index 173e37da..d74afdae 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@ deps =
   pylint-django<0.8.1
   django-webtest<1.9.3
   psycopg2
-  django-mellon>=1.12
+  django-mellon>=1.13
   py2: django-jsonfield<1.3
   py2: quixote<3.0
   py2: vobject