diff --git a/stack/slapos.cfg b/stack/slapos.cfg
index a6ff7521235d1d07ac393cad35f87f5035459098..55f786acfe9ade1bbaaa0132d8f91f980b5f68f3 100644
--- a/stack/slapos.cfg
+++ b/stack/slapos.cfg
@@ -85,7 +85,7 @@ eggs =
 
 [versions]
 # Use SlapOS patched zc.buildout
-zc.buildout = 1.6.0-dev-SlapOS-012
+zc.buildout = 1.6.0-dev-SlapOS-013
 # zc.recipe.egg 2.x is for Buildout 2
 zc.recipe.egg = 1.3.2
 # Use own version of h.r.download to be able to open xz-like archives