diff --git a/tox.ini b/tox.ini
index cd6b248ef..0d41f0395 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,11 @@ deps=
     nose
     simplejson
 
+[testenv:py25]
+deps=
+    nose
+    simplejson
+
 [testenv:py31]
 deps=https://bitbucket.org/jpellerin/nose3/get/tip.zip