diff --git a/clusters/ipv6/monitoring/prometheus/prometheus-pvc.yml b/clusters/ipv6/monitoring/prometheus/prometheus-pvc.yml
index aaf2151..03c6168 100644
--- a/clusters/ipv6/monitoring/prometheus/prometheus-pvc.yml
+++ b/clusters/ipv6/monitoring/prometheus/prometheus-pvc.yml
@@ -10,5 +10,5 @@ spec:
       storage: 2Gi
   volumeMode: Filesystem
   accessModes:
-    - ReadWriteMany
+    - ReadWriteOnce
   storageClassName: longhorn
diff --git a/clusters/ipv6/monitoring/prometheus/prometheus-release.yml b/clusters/ipv6/monitoring/prometheus/prometheus-release.yml
index 11baf6f..ea065a5 100644
--- a/clusters/ipv6/monitoring/prometheus/prometheus-release.yml
+++ b/clusters/ipv6/monitoring/prometheus/prometheus-release.yml
@@ -20,3 +20,6 @@ spec:
       persistentVolume:
         enabled: true
         existingClaim: prometheus-longhorn
+    prometheus:
+      prometheusSpec:
+        retention: 1d