diff --git a/tox.ini b/tox.ini
index 28f801d..2510cc9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py25, py26, py27, py33
+envlist = py25, py26, py27, py33, py34, py35, py36
 
 [testenv]
 deps = nose