diff --git a/tox.ini b/tox.ini
index 8713cf8..e56b39c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py35,py36
+envlist = py27,py36,py37
 
 [testenv]
 deps =