diff --git a/tox.ini b/tox.ini
index 8315de9b0..0b2614301 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py25,py26,py27,py31,py32,py33,pypy,du09,du08,du07
+envlist=py25,py26,py27,py31,py32,py33,pypy,du10,du09,du08,du07
 
 [testenv]
 deps=