diff --git a/tools/deployment/developer/common/050-mariadb.sh b/tools/deployment/developer/common/050-mariadb.sh
index ed57f2f6b7..c5507e3dc9 100755
--- a/tools/deployment/developer/common/050-mariadb.sh
+++ b/tools/deployment/developer/common/050-mariadb.sh
@@ -75,6 +75,9 @@ network_policy:
         - podSelector:
             matchLabels:
               application: mariadb-backup
+        - podSelector:
+            matchLabels:
+              application: prometheus-mysql-exporter
         ports:
         - protocol: TCP
           port: 3306