diff --git a/hosts/monitoring-3/rules.yml b/hosts/monitoring-3/rules.yml
index 7cb9d07..f9bb742 100644
--- a/hosts/monitoring-3/rules.yml
+++ b/hosts/monitoring-3/rules.yml
@@ -89,7 +89,7 @@ groups:
       description: "GPG with fingerprint {{ $labels.fingerprint }} is expiring in less then six weeks"
   - alert: NadjaTopIPv4ProxyBroken
     expr: probe_success{job="blackbox_local_http6", target="blog.nadja.top"} != on (target) probe_success{job="blackbox_local_http4", target="blog.nadja.top"}
-    for: 5m
+    for: 15m
     labels:
       severity: critical
     annotations: