diff --git a/templates/Prometheus-prometheus.yaml b/templates/Prometheus-prometheus.yaml
index d526374..66dacd0 100644
--- a/templates/Prometheus-prometheus.yaml
+++ b/templates/Prometheus-prometheus.yaml
@@ -49,6 +49,6 @@ spec:
   serviceAccountName: prometheus-k8s
   serviceMonitorNamespaceSelector: {}
   serviceMonitorSelector: {}
-
+  storage:
     {{- toYaml .Values.nfc_monitoring.prometheus.affinity | nindent 4 }}
   version: 2.42.0
diff --git a/values.yaml b/values.yaml
index 6982795..769af8d 100644
--- a/values.yaml
+++ b/values.yaml
@@ -107,6 +107,15 @@ nfc_monitoring:
             topologyKey: kubernetes.io/hostname
           weight: 10
 
+    storage:
+      volumeClaimTemplate:
+        spec:
+          accessModes:
+            - ReadWriteOnce
+          resources:
+            requests:
+              storage: 40Gi
+
 
   prometheus_adaptor: