diff --git a/tox.ini b/tox.ini
index 684056b8..56ef18f9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,8 @@ envlist=
 [testenv]
 deps=
     unittest2
-extras = yaml
+extras=
+    yaml
 commands=
     unit2 discover -s tests/unit -p test_*_py3.py
 
@@ -28,6 +29,9 @@ commands=
 commands=
     unit2 discover -s tests/unit -p test_*_py2_py3.py
 
+[testenv:py34]
+extras=
+
 [testenv:pypy]
 commands=
     unit2 discover -s tests/unit -p test_*_py2_py3.py