diff --git a/.gitreview b/.gitreview
index 9ae35eebf2..56981d949e 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=review.opendev.org
 port=29418
 project=openstack/heat.git
-defaultbranch=stable/2023.1
+defaultbranch=unmaintained/2023.1