diff --git a/tox.ini b/tox.ini
index 205c8594..112cb421 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist = py25, py26, py27, py32, py33
 [testenv]
 deps =
-    pytest
+    https://bitbucket.org/hpk42/pytest/get/c4f58165e0d4.zip
 commands =
     py.test []
 [testenv:py25]