diff --git a/project.config b/project.config
index 1726607..ea2c8d4 100644
--- a/project.config
+++ b/project.config
@@ -105,5 +105,8 @@
 	push = group ldap/OSM_TSC
 	pushMerge = group Registered Users
 	submit = group Registered Users
+	exclusiveGroupPermissions = forgeAuthor forgeCommitter
+	forgeAuthor = group ldap/OSM_Admin
+	forgeCommitter = group ldap/OSM_Admin
 [plugin "its-bugzilla"]
 	enabled = true