diff --git a/tox.ini b/tox.ini
index b08d6b293..92cea737c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,8 @@ commands=
 deps=
     simplejson==2.5.0
     {[testenv]deps}
+setenv=
+    PIP_INSECURE = 1
 
 [testenv:py33]
 deps=