diff --git a/hosts/monitoring-3/configuration.nix b/hosts/monitoring-3/configuration.nix
index de3e543..826536b 100644
--- a/hosts/monitoring-3/configuration.nix
+++ b/hosts/monitoring-3/configuration.nix
@@ -101,7 +101,17 @@ in {
     configuration = {
       route = {
         receiver = "xmpp-receiver";
+        repeat_interval = "4h";
         group_by = [ "instance" ];
+        routes = [
+          {
+            receiver = "xmpp-receiver";
+            matchers = [
+              ''severity = "warning"''
+            ];
+            repeat_interval = "70h";
+          }
+        ];
       };
       receivers = [
         {
diff --git a/hosts/monitoring-3/rules.yml b/hosts/monitoring-3/rules.yml
index de0a8de..71a4d26 100644
--- a/hosts/monitoring-3/rules.yml
+++ b/hosts/monitoring-3/rules.yml
@@ -9,3 +9,10 @@ groups:
     annotations:
       summary: "Endpoint {{ $labels.instance }} down"
       description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes."
+  - alert: InstanceUptime
+    expr: time() - node_boot_time_seconds{job="node-exporter"} >= 7776000
+    labels:
+      severity: warning
+    annotations:
+      summary: "Uptime of {{ $labels.instance }} more than 90 days"
+      description: "The last reboot of {{ $labels.instance }} was more than 90 days ago"