diff --git a/monitoring/stack/services-external.yaml b/monitoring/stack/services-external.yaml
index 30e54b0..5789b02 100644
--- a/monitoring/stack/services-external.yaml
+++ b/monitoring/stack/services-external.yaml
@@ -23,7 +23,7 @@ spec:
   type: NodePort
   selector:
     app.kubernetes.io/name: prometheus
-    prometheus: prometheus-kube-prometheus-stack-prometheus
+    operator.prometheus.io/name: kube-prometheus-stack-prometheus
   ports:
     - name: "30001"
       port: 30001
@@ -39,7 +39,7 @@ spec:
   type: NodePort
   selector:
     app.kubernetes.io/name: alertmanager
-    alertmanager: prometheus-kube-prometheus-stack-alertmanager
+    app.kubernetes.io/instance: kube-prometheus-stack-alertmanager
   ports:
     - name: "30002"
       port: 30002