diff --git a/tox.ini b/tox.ini
index 58926759..044aba22 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,7 @@ deps =
   pylint-django<0.8.1
   django-webtest<1.9.3
   pytz
+  py2: django-jsonfield<1.3
   py2: django-mellon
   py3: django-mellon>=1.2.35
   pytest-freezegun