diff --git a/services/monitoring/helmrelease.yaml b/services/monitoring/helmrelease.yaml
index 4d5a4c4..3fd76db 100644
--- a/services/monitoring/helmrelease.yaml
+++ b/services/monitoring/helmrelease.yaml
@@ -65,13 +65,13 @@ spec:
         namespace: flux-system
   values:
     server:
-      # keep ~3 months; change as you like (supports "d", "y")
+      # keep 1 year; supports "d", "y"
       extraArgs:
-        retentionPeriod: "90d"   # VM flag -retentionPeriod=90d. :contentReference[oaicite:11]{index=11}
+        retentionPeriod: "1y"   # VM flag -retentionPeriod=1y. :contentReference[oaicite:11]{index=11}
 
       persistentVolume:
         enabled: true
-        size: 100Gi
+        size: 250Gi
 
       # Enable built-in Kubernetes scraping
       scrape: