diff --git a/tox.ini b/tox.ini
index b10ee0c..0359350 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py33, py34, py35, flake8
+envlist = py34, py35, flake8
 
 [testenv:flake8]
 basepython=python