diff --git a/.github/workflows/sonar.yaml b/.github/workflows/sonar.yaml
index a106823cd6f..441454d6a98 100644
--- a/.github/workflows/sonar.yaml
+++ b/.github/workflows/sonar.yaml
@@ -81,4 +81,6 @@ jobs:
             --define sonar.projectKey=apache_kvrocks \
             --define sonar.organization=apache \
             --define sonar.scm.revision=${{ github.event.workflow_run.head_sha }} \
-            --define sonar.pullrequest.key=$PR_NUMBER
+            --define sonar.pullrequest.key=$PR_NUMBER \
+            --define sonar.pullrequest.base=unstable \
+            --define sonar.pullrequest.branch=${{ github.head_ref || github.ref_name }}