diff --git a/.gitreview b/.gitreview
index 95022734..420d1044 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,3 +2,4 @@
 host=review.openstack.org
 port=29418
 project=openstack/stx-upstream.git
+defaultbranch=m/2018.08