diff --git a/tox.ini b/tox.ini
index 4968f11..a8bc693 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ skipsdist=True
 deps =
      twisted
 commands =
-    {envbindir}/pip install {toxinidir}
+    #{envbindir}/pip install {toxinidir}
     {envbindir}/trial {posargs:constantly}
 
 [testenv:cov]