diff --git a/otc/observability.t09.de/stacks/observability/victoria-k8s-stack/values.yaml b/otc/observability.t09.de/stacks/observability/victoria-k8s-stack/values.yaml
index 5e1dcc4..c0d8c4c 100644
--- a/otc/observability.t09.de/stacks/observability/victoria-k8s-stack/values.yaml
+++ b/otc/observability.t09.de/stacks/observability/victoria-k8s-stack/values.yaml
@@ -536,7 +536,7 @@ alertmanager:
   # If you're migrating existing config, please make sure that `.Values.alertmanager.config`:
   # - with `useManagedConfig: false` has structure described [here](https://prometheus.io/docs/alerting/latest/configuration/).
   # - with `useManagedConfig: true` has structure described [here](https://docs.victoriametrics.com/operator/api/#vmalertmanagerconfig).
-  useManagedConfig: false
+  useManagedConfig: true
   # -- (object) Alertmanager configuration
   config:
     route: