diff --git a/tox.ini b/tox.ini
index d0d9e364d6..10dc0f12c4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 1.6
+minversion = 2.0
 skipsdist = True
 envlist = py36,py35,py27,pep8,pypy