diff --git a/tox.ini b/tox.ini
index a6c06ae..928a1dc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,pypy
+envlist = py27,py34,pypy
 [testenv]
 deps = -rrequirements-test.txt
 commands = py.test --doctest-modules boltons