diff --git a/tools/deployment/developer/common/050-mariadb.sh b/tools/deployment/developer/common/050-mariadb.sh
index e5007e3d65..ed57f2f6b7 100755
--- a/tools/deployment/developer/common/050-mariadb.sh
+++ b/tools/deployment/developer/common/050-mariadb.sh
@@ -72,6 +72,9 @@ network_policy:
         - podSelector:
             matchLabels:
               application: senlin
+        - podSelector:
+            matchLabels:
+              application: mariadb-backup
         ports:
         - protocol: TCP
           port: 3306