diff --git a/tox.ini b/tox.ini
index b85bd2938..54a05caba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,6 @@
+# noted to use py34 you need virtualenv >= 1.11.4
 [tox]
-envlist = py26,py27,py33,pypy,pep8
+envlist = py26,py27,py33,py34,pypy,pep8
 minversion = 1.6
 skipsdist = True