diff --git a/metadata/layout.conf b/metadata/layout.conf
index 86c81a0..05c50cd 100644
--- a/metadata/layout.conf
+++ b/metadata/layout.conf
@@ -3,3 +3,4 @@ masters = gentoo
 thin-manifests = true
 use-manifests = strict
 sign-commits = true
+profile-formats = portage-2