diff --git a/app/realtime.php b/app/realtime.php
index 192672a2f3..5631a7f860 100644
--- a/app/realtime.php
+++ b/app/realtime.php
@@ -398,7 +398,11 @@ $server->onWorkerStart(function (int $workerId) use ($server, $register, $stats,
     $register->set('telemetry.connectionCounter', fn () => $telemetry->createUpDownCounter('realtime.server.open_connections'));
     $register->set('telemetry.connectionCreatedCounter', fn () => $telemetry->createCounter('realtime.server.connection.created'));
     $register->set('telemetry.messageSentCounter', fn () => $telemetry->createCounter('realtime.server.message.sent'));
-    $register->set('telemetry.deliveryDelayHistogram', fn () => $telemetry->createHistogram('realtime.server.delivery_delay', 'ms'));
+    $register->set('telemetry.deliveryDelayHistogram', fn () => $telemetry->createHistogram(
+        name: 'realtime.server.delivery_delay',
+        unit: 'ms',
+        advisory: ['ExplicitBucketBoundaries' => [100, 250, 500, 750, 1000, 1500, 2000, 3000, 5000, 7500, 10000, 15000, 30000]],
+    ));
 
     $attempts = 0;
     $start = time();