diff --git a/tox.ini b/tox.ini
index 2cebb85d..96cfe913 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,7 +21,7 @@ deps =
   httmock
   pylint<1.8
   pylint-django<0.9
-  django-webtest
+  django-webtest<1.9.3
   django-mellon
 commands =
   ./getlasso.sh