diff --git a/tox.ini b/tox.ini
index 1d1f1aa01..e23a6aa3b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = docs, pep8, py35, py27, cover
+envlist = docs, pep8, py34, py35, py36, py27, cover
 skip_missing_interpreters = true
 
 [testenv]