diff --git a/tox.ini b/tox.ini
index 22a7ee1b..c4401e35 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 1.6
+minversion = 2.0
 envlist = py36,py27,pypy,pep8
 skipsdist = True