diff --git a/tox.ini b/tox.ini
index 185a5d8..8a0d49f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,5 +17,6 @@ deps =
   pytest
   pytest-cov
   pytest-django
+  py2: enum34<=1.1.6
 commands =
   py.test {posargs: {env:JUNIT:} {env:COVERAGE:} tests/}