diff --git a/tox.ini b/tox.ini
index 7149d08e..44938531 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 minversion = 2.0
 skipsdist = True
-envlist = py35,py27,pep8,releasenotes
+envlist = py36,py35,py27,pep8,releasenotes
 
 [testenv]
 usedevelop = True