diff --git a/dev-plone4.cfg b/dev-plone4.cfg
index cc265fb..8adc153 100644
--- a/dev-plone4.cfg
+++ b/dev-plone4.cfg
@@ -1,5 +1,5 @@
 [buildout]
-extensions = mr.developer buildout.dumppickedversions
+extensions = mr.developer buildout.dumppickedversions buildout.eggtractor
 unzip = true
 parts =
     instance
@@ -14,7 +14,6 @@ dump-picked-versions-file = versions.plone4.cfg
 overwrite-picked-versions-file = True
 
 tractor-src-directory = src
-packages-under-test = plone.app.discussion
 
 # Change the number here to change the version of Plone being used
 extends = 
@@ -72,6 +71,7 @@ eggs =
 # If you want to register ZCML slugs for any packages, list them here.
 # e.g. zcml = my.package my.other.package
 zcml =
+    collective.akismet
     collective.autoresizetextarea
     plone.formwidget.captcha
     plone.formwidget.recaptcha