diff --git a/tox.ini b/tox.ini
index ed316f6..864b989 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 2.8
+minversion = 2.7
 envlist = docs,pep8
 skipsdist = True