diff --git a/tox.ini b/tox.ini
index d99ad32..9b0f9d5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = py27,py34,pep8
+envlist = py27,py34,py35,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}