diff --git a/tox.ini b/tox.ini
index 657b00638571..954d3e09ad3c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py26,py27,py33,pep8,pip-missing-reqs
+envlist = py26,py27,pep8,pip-missing-reqs
 skipsdist = True
 
 [testenv]