diff --git a/tox.ini b/tox.ini
index 24703642..658f92c9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py35,pypy,pep8,releasenotes
+envlist = py27,py35,py36,pypy,pep8,releasenotes
 minversion = 2.0
 skipsdist = True