diff --git a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
index 677565884..ae0294d75 100644
--- a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
+++ b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
@@ -33,7 +33,7 @@ kube-prometheus-stack:
               token_file: /etc/alertmanager/secrets/alertmanager-config-secret/pushover_token
         - name: ntfy
           webhook_configs:
-            - url: "http://127.0.0.1:8080"
+            - url: http://ntfy-alertmanager.kube-prometheus-stack:80
               http_config:
                 basic_auth:
                   username: ntfy-alertmanager