diff --git a/stack/erp5.cfg b/stack/erp5.cfg
index e01f6c056d88ec8237b6f1632caaa28f8f6f9967..0732e83194c688b5483b6d720de4b9de51d80c5c 100644
--- a/stack/erp5.cfg
+++ b/stack/erp5.cfg
@@ -16,10 +16,11 @@ exec-sitecustomize = false
 
 # Use only quite well working sites.
 allow-hosts =
-  dist.repoze.org
   *.nexedi.org
   *.python.org
   *.sourceforge.net
+  dist.repoze.org
+  effbot.org
 
 extends =
 # Exact version of Zope