diff --git a/charts/alertmanager/Chart.yaml b/charts/alertmanager/Chart.yaml
index c2ec6c5a5d03..0a176834b9e6 100644
--- a/charts/alertmanager/Chart.yaml
+++ b/charts/alertmanager/Chart.yaml
@@ -6,7 +6,7 @@ icon: https://raw.githubusercontent.com/prometheus/prometheus.github.io/master/a
 sources:
   - https://github.com/prometheus/alertmanager
 type: application
-version: 1.13.0
+version: 1.13.1
 appVersion: v0.27.0
 kubeVersion: ">=1.19.0-0"
 keywords:
diff --git a/charts/alertmanager/templates/statefulset.yaml b/charts/alertmanager/templates/statefulset.yaml
index 0bc765c2fdbd..25751402dd85 100644
--- a/charts/alertmanager/templates/statefulset.yaml
+++ b/charts/alertmanager/templates/statefulset.yaml
@@ -233,7 +233,9 @@ spec:
       {{- end }}
   {{- if .Values.persistence.enabled }}
   volumeClaimTemplates:
-    - metadata:
+    - apiVersion: v1
+      kind: PersistentVolumeClaim
+      metadata:
         name: storage
       spec:
         accessModes: