diff --git a/tox.ini b/tox.ini
index 9c7e69e6134..59aa4a0cd7e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,py3{5,6)
+envlist = py26,py27,py35,py36
 
 [testenv:py35]
 deps = -r{toxinidir}/test/utils/tox/requirements-py3.txt