1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index bbfb3dd..5fc2f00 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py27,py34,py35,pypy,pep8
+envlist = py27,py33,py34,py35,pypy,pep8
 skipsdist = True
 
 [testenv]