diff --git a/tox.ini b/tox.ini
index 7857b4e..fd8d7cb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist = py26, py27
 
 [testenv]
-commands = nosetests -v
+commands = nosetests -v {posargs}
 deps =
     unittest2
     nose