diff --git a/substrate/.maintain/monitoring/alerting-rules/alerting-rules.yaml b/substrate/.maintain/monitoring/alerting-rules/alerting-rules.yaml
index deb454c462bdaf602ff9737c83840be3aa305aeb..cf00d7e2b90f1d44a04005e41ee553e3bf25acc9 100644
--- a/substrate/.maintain/monitoring/alerting-rules/alerting-rules.yaml
+++ b/substrate/.maintain/monitoring/alerting-rules/alerting-rules.yaml
@@ -166,9 +166,9 @@ groups:
         (polkadot_unbounded_channel_len{action = "send"} -
             ignoring(action) polkadot_unbounded_channel_len{action = "received"})
         or on(instance) polkadot_unbounded_channel_len{action = "send"}
-    ) > 5000'
+    ) > 15000'
     labels:
       severity: warning
     annotations:
       message: 'Channel {{ $labels.entity }} on node {{ $labels.instance }} contains more than
-      5000 items.'
+      15000 items.'