diff --git a/dev-plone4/buildout.cfg b/dev-plone4/buildout.cfg
index 7f1d00d..10b7e3e 100644
--- a/dev-plone4/buildout.cfg
+++ b/dev-plone4/buildout.cfg
@@ -17,13 +17,13 @@ packages-under-test = plone.app.discussion
 # Change the number here to change the version of Plone being used
 extends = 
     http://download.zope.org/Zope2/index/2.12.1/versions.cfg
-    http://dist.plone.org/release/4.0a4/versions.cfg
+    http://dist.plone.org/release/4.0b1/versions.cfg
 versions = versions
 
 # Add additional egg download sources here. dist.plone.org contains archives
 # of Plone packages.
 find-links =
-    http://dist.plone.org/release/4.0a4
+    http://dist.plone.org/release/4.0b1
     http://dist.plone.org/thirdparty
 
 # Add additional eggs here