diff --git a/tox.ini b/tox.ini
index 352b24c1..5c3f33f5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py33,py34
+envlist = py33,py34,py35
 skipsdist = True
 
 [testenv]