diff --git a/tox.ini b/tox.ini
index e655761..06a9d59 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py34,py27,pep8
+envlist = py27,py35,py36,pep8
 skipsdist = True
 
 [testenv]