diff --git a/tox.ini b/tox.ini
index 681e20a..424076a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py33, py34
+envlist = py27
 
 [testenv]
 setenv =