diff --git a/tox.ini b/tox.ini
index 69a082a..fc0d7b4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ deps =
     six
     redis==2.10.5
     py27: mock
-    flake8: flake8
+    flake8: flake8>=2.0,<3.0
     isort: isort
     django-18: Django>=1.8,<1.9
     django-19: Django>=1.9,<1.10