diff --git a/dev/buildout.cfg b/dev/buildout.cfg
index 784993e..4b164da 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/3.3/versions.cfg
+    http://dist.plone.org/release/3.3.4/versions.cfg
     http://good-py.appspot.com/release/plone.app.discussion/1.0a2
 versions = versions
 sources = sources