diff --git a/site.conf b/site.conf
index 0e68374..5c09171 100644
--- a/site.conf
+++ b/site.conf
@@ -2,7 +2,7 @@
 	hostname_prefix => 'freifunk',
 	site_name => 'Freifunk Hamburg',
 	site_code => 'ffhh',
-	release => '0.4',
+	release => '0.4+0-exp' . nightly,
 
 	prefix4 => '10.112.0.0/18',
 	prefix6 => 'fd51:2bb2:fd0d::/64',