diff --git a/tox.ini b/tox.ini
index ce20147a..f02792f9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 distribute = False
-envlist = py33,py26,py27,pep8
+envlist = py33,py34,py26,py27,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}