diff --git a/dev/buildout.cfg b/dev/buildout.cfg
index 733137f..3fd5a1a 100644
--- a/dev/buildout.cfg
+++ b/dev/buildout.cfg
@@ -3,7 +3,7 @@ extensions = mr.developer buildout.dumppickedversions
 unzip = true
 parts = instance omelette zopepy roadrunner
 extends =
-    http://dist.plone.org/release/3.3rc3/versions.cfg
+    http://dist.plone.org/release/3.3rc4/versions.cfg
     http://good-py.appspot.com/release/plone.app.discussion/1.0a1
 versions = versions
 sources = sources