diff --git a/infra/postgres/values.yaml b/infra/postgres/values.yaml
index f3b86571..7fcc1087 100644
--- a/infra/postgres/values.yaml
+++ b/infra/postgres/values.yaml
@@ -1,6 +1,6 @@
 image:
   repository: "postgres"
-  tag: "17.9-bookworm"
+  tag: "18.6-bookworm"
 
 upgrade-image:
   repository: "pgautoupgrade/pgautoupgrade"
diff --git a/ops/monitoring/values.yaml b/ops/monitoring/values.yaml
index f1874064..ef6d70c5 100644
--- a/ops/monitoring/values.yaml
+++ b/ops/monitoring/values.yaml
@@ -58,6 +58,8 @@ victoria-metrics-k8s-stack:
         org_mapping: $__env{GITHUB_ORG_MAPPING}
       users:
         auto_assign_org_role: None
+      plugins:
+        preinstall_auto_update: true
     admin:
       existingSecret: grafana
       userKey: admin-user