diff --git a/tox.ini b/tox.ini
index 7cccd42..df1b0ef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,8 @@ envlist = python
 minversion = 2.4
 
 [testenv]
+deps =
+	setuptools>=31.0.1
 commands =
 	py.test {posargs}
 	python setup.py checkdocs