diff --git a/charts/kube-prometheus-stack/Chart.yaml b/charts/kube-prometheus-stack/Chart.yaml
index 2f468f30..fe75e51e 100644
--- a/charts/kube-prometheus-stack/Chart.yaml
+++ b/charts/kube-prometheus-stack/Chart.yaml
@@ -18,7 +18,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 15.1.0
+version: 15.1.1
 appVersion: 0.47.0
 kubeVersion: ">=1.16.0-0"
 home: https://github.com/prometheus-operator/kube-prometheus
diff --git a/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml b/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml
index cd3b10ba..c550bee0 100644
--- a/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml
+++ b/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml
@@ -91,7 +91,7 @@ spec:
         labelSelector:
           matchExpressions:
             - {key: app, operator: In, values: [alertmanager]}
-            - {key: prometheus, operator: In, values: [{{ template "kube-prometheus-stack.fullname" . }}-alertmanager]}
+            - {key: alertmanager, operator: In, values: [{{ template "kube-prometheus-stack.fullname" . }}-alertmanager]}
 {{- else if eq .Values.alertmanager.alertmanagerSpec.podAntiAffinity "soft" }}
     podAntiAffinity:
       preferredDuringSchedulingIgnoredDuringExecution: