diff --git a/tox.ini b/tox.ini
index 48c29f139..3aef31627 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,7 @@ deps =
     {[testenv]deps}
     coverage
 commands =
-    nosetests
+    nosetests --with-coverage
 
 [testenv:docs]
 changedir = docs