diff --git a/tox.ini b/tox.ini
index 20a7779..aa7bcd4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = pep8,py35,py27
+envlist = pep8,py35,py36,py37,py27
 skipsdist = True
 
 [testenv]