diff --git a/stack/slapos.cfg b/stack/slapos.cfg
index 300614d5454c5f4a55e2a044a8f9ba2a503b81e4..c772b54ef1353818d9f9c74c19773190a2c0a307 100644
--- a/stack/slapos.cfg
+++ b/stack/slapos.cfg
@@ -11,6 +11,7 @@ extensions +=
 
 # Use shacache and lxml
 extends =
+  ../component/lxml-python/buildout.cfg
   shacache-client.cfg
   
 # Separate from site eggs
@@ -50,6 +51,7 @@ versions = versions
 [slapos-cookbook]
 recipe = zc.recipe.egg
 eggs =
+  ${lxml-python:egg}
   slapos.cookbook
 
 [versions]