diff --git a/charts/kube-prometheus-stack/Chart.yaml b/charts/kube-prometheus-stack/Chart.yaml
index 4d07d17a8480..f16e8b58198e 100644
--- a/charts/kube-prometheus-stack/Chart.yaml
+++ b/charts/kube-prometheus-stack/Chart.yaml
@@ -23,7 +23,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 63.0.0
+version: 63.1.0
 appVersion: v0.76.1
 kubeVersion: ">=1.19.0-0"
 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 656f0c8c02f9..1b43f5b039c9 100644
--- a/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml
+++ b/charts/kube-prometheus-stack/templates/alertmanager/alertmanager.yaml
@@ -172,6 +172,9 @@ spec:
 {{- if .Values.alertmanager.alertmanagerSpec.clusterPushpullInterval }}
   clusterPushpullInterval: {{ .Values.alertmanager.alertmanagerSpec.clusterPushpullInterval }}
 {{- end }}
+{{- if .Values.alertmanager.alertmanagerSpec.clusterLabel }}
+  clusterLabel: {{ .Values.alertmanager.alertmanagerSpec.clusterLabel }}
+{{- end }}
 {{- if .Values.alertmanager.alertmanagerSpec.forceEnableClusterMode }}
   forceEnableClusterMode: {{ .Values.alertmanager.alertmanagerSpec.forceEnableClusterMode }}
 {{- end }}
diff --git a/charts/kube-prometheus-stack/values.yaml b/charts/kube-prometheus-stack/values.yaml
index 68ea19334c11..f3d085b30fcb 100644
--- a/charts/kube-prometheus-stack/values.yaml
+++ b/charts/kube-prometheus-stack/values.yaml
@@ -927,6 +927,9 @@ alertmanager:
     ## Needs to be specified as GoDuration, a time duration that can be parsed by Go’s time.ParseDuration() (e.g. 45ms, 30s, 1m, 1h20m15s)
     clusterPushpullInterval: ""
 
+    ## clusterLabel defines the identifier that uniquely identifies the Alertmanager cluster.
+    clusterLabel: ""
+
     ## ForceEnableClusterMode ensures Alertmanager does not deactivate the cluster mode when running with a single replica.
     ## Use case is e.g. spanning an Alertmanager cluster across Kubernetes clusters with a single replica in each.
     forceEnableClusterMode: false