diff --git a/stack/erp5/buildout.cfg b/stack/erp5/buildout.cfg
index 68d88783e08cf98f433d18a1a4219b11c81ec0d8..2e6273713bf574998a1231710bee1fc34fb1e60b 100644
--- a/stack/erp5/buildout.cfg
+++ b/stack/erp5/buildout.cfg
@@ -448,6 +448,8 @@ eggs =
   huBarcode
   qrcode
   spyne
+  httplib2
+  suds
 # Needed for checking ZODB Components source code
   pylint