diff --git a/tox.ini b/tox.ini
index 2bd25f9..bec29c4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py35,py27,pep8,alint
+envlist = py35,py27,pep8,alint,cover
 skipsdist = True
 
 [testenv]