diff --git a/jsonnet/kube-prometheus/components/alertmanager.libsonnet b/jsonnet/kube-prometheus/components/alertmanager.libsonnet
index 910ff7b91f76e913f5cf8e6b620f31c58d3de33b..fa6368ca6b56433eb57f0323b9f2ed145eb0d4d9 100644
--- a/jsonnet/kube-prometheus/components/alertmanager.libsonnet
+++ b/jsonnet/kube-prometheus/components/alertmanager.libsonnet
@@ -140,7 +140,6 @@ function(params) {
         { name: 'reloader-web', port: am._config.reloaderPort, targetPort: 'reloader-web' },
       ],
       selector: {
-        app: 'alertmanager',
         alertmanager: am._config.name,
       } + am._config.selectorLabels,
       sessionAffinity: 'ClientIP',
diff --git a/jsonnet/kube-prometheus/components/prometheus.libsonnet b/jsonnet/kube-prometheus/components/prometheus.libsonnet
index 6ee18196c7e5d49e2532aa71712edcd7d46ff084..5c6e04ce574d988a79f1b3eb7f480912200b3283 100644
--- a/jsonnet/kube-prometheus/components/prometheus.libsonnet
+++ b/jsonnet/kube-prometheus/components/prometheus.libsonnet
@@ -107,7 +107,7 @@ function(params) {
                  [{ name: 'grpc', port: 10901, targetPort: 10901 }]
                else []
              ),
-      selector: { app: 'prometheus' } + p._config.selectorLabels,
+      selector: p._config.selectorLabels,
       sessionAffinity: 'ClientIP',
     },
   },
diff --git a/manifests/alertmanager-service.yaml b/manifests/alertmanager-service.yaml
index 473e050c950d23bedbd22185a4287eb8836edfd0..f6a13070e54309cffbb5809c5d7e8fe198f18551 100644
--- a/manifests/alertmanager-service.yaml
+++ b/manifests/alertmanager-service.yaml
@@ -19,7 +19,6 @@ spec:
     targetPort: reloader-web
   selector:
     alertmanager: main
-    app: alertmanager
     app.kubernetes.io/component: alert-router
     app.kubernetes.io/name: alertmanager
     app.kubernetes.io/part-of: kube-prometheus
diff --git a/manifests/prometheus-service.yaml b/manifests/prometheus-service.yaml
index 189fda416bf76b37bd2734c96f32678e6fadcc01..25de9f7a7904d2739ce8fe91bc958f37e320820d 100644
--- a/manifests/prometheus-service.yaml
+++ b/manifests/prometheus-service.yaml
@@ -18,7 +18,6 @@ spec:
     port: 8080
     targetPort: reloader-web
   selector:
-    app: prometheus
     app.kubernetes.io/component: prometheus
     app.kubernetes.io/name: prometheus
     app.kubernetes.io/part-of: kube-prometheus