diff --git a/.gitreview b/.gitreview
index 93170ff..5182dda 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=review.opendev.org
 port=29418
 project=nebulous/slo-violation-detector.git
-defaultbranch=master
+defaultbranch=r1