diff --git a/tox.ini b/tox.ini
index 2c62e5d..5f0b77a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ usedevelop =
 deps =
   dj18: django>=1.8,<1.9
   dj18: django-tables2<1.1
+  dj18: django-jsonfield<1.1
   dj111: django>=1.11,<1.12
   dj111: django-tables2>=1.1,<2
   pg: psycopg2