diff --git a/ts/WoltLabSuite/Core/Notification/Handler.ts b/ts/WoltLabSuite/Core/Notification/Handler.ts
index 1da2b00f454..a156989accb 100644
--- a/ts/WoltLabSuite/Core/Notification/Handler.ts
+++ b/ts/WoltLabSuite/Core/Notification/Handler.ts
@@ -12,7 +12,7 @@ import * as Ajax from "../Ajax";
 import { AjaxCallbackSetup } from "../Ajax/Data";
 import * as Core from "../Core";
 import * as EventHandler from "../Event/Handler";
-import { serviceWorkerSupported } from "./ServiceWorker";
+import { serviceWorkerSupported, updateNotificationLastReadTime } from "./ServiceWorker";
 import { updateCounter } from "WoltLabSuite/Core/Ui/User/Menu/Manager";
 
 interface NotificationHandlerOptions {
@@ -206,6 +206,9 @@ class NotificationHandler {
 
     this.lastRequestTimestamp = data.returnValues.lastRequestTimestamp;
 
+    // Update the last read time for the service worker
+    updateNotificationLastReadTime(this.lastRequestTimestamp);
+
     EventHandler.fire("com.woltlab.wcf.notification", "afterPoll", pollData);
 
     this.showNotification(pollData);
@@ -264,6 +267,10 @@ class NotificationHandler {
       silent: !window.ENABLE_DEBUG_MODE,
     };
   }
+
+  updateLastRequestTimestamp(timestamp: number): void {
+    this.lastRequestTimestamp = Math.max(timestamp, this.lastRequestTimestamp);
+  }
 }
 
 let notificationHandler: NotificationHandler;
@@ -281,6 +288,10 @@ export function enableNotifications(): void {
   notificationHandler!.enableNotifications();
 }
 
+export function updateLastRequestTimestamp(timestamp: number): void {
+  notificationHandler?.updateLastRequestTimestamp(timestamp);
+}
+
 export function poll(): void {
   notificationHandler?.dispatchRequest();
 }
diff --git a/ts/WoltLabSuite/Core/Notification/ServiceWorker.ts b/ts/WoltLabSuite/Core/Notification/ServiceWorker.ts
index d24b8136c3f..cff50ae9fb1 100644
--- a/ts/WoltLabSuite/Core/Notification/ServiceWorker.ts
+++ b/ts/WoltLabSuite/Core/Notification/ServiceWorker.ts
@@ -7,6 +7,7 @@
  */
 
 import { prepareRequest } from "WoltLabSuite/Core/Ajax/Backend";
+import { updateLastRequestTimestamp } from "WoltLabSuite/Core/Notification/Handler";
 
 let _serviceWorker: ServiceWorker | null = null;
 
@@ -24,6 +25,15 @@ class ServiceWorker {
       scope: "/",
     });
     this.#serviceWorkerRegistration = window.navigator.serviceWorker.ready;
+
+    window.navigator.serviceWorker.addEventListener("message", (event) => {
+      // Validate that this is a message from our service worker
+      if (!(event.source instanceof window.ServiceWorker) || event.source.scriptURL !== this.#serviceWorkerJsUrl) {
+        return;
+      }
+
+      updateLastRequestTimestamp(event.data.time);
+    });
   }
 
   async register(): Promise<void> {
diff --git a/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/Handler.js b/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/Handler.js
index 35691130f76..94d2b9473ee 100644
--- a/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/Handler.js
+++ b/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/Handler.js
@@ -12,6 +12,7 @@ define(["require", "exports", "tslib", "../Ajax", "../Core", "../Event/Handler",
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.setup = setup;
     exports.enableNotifications = enableNotifications;
+    exports.updateLastRequestTimestamp = updateLastRequestTimestamp;
     exports.poll = poll;
     Ajax = tslib_1.__importStar(Ajax);
     Core = tslib_1.__importStar(Core);
@@ -155,6 +156,8 @@ define(["require", "exports", "tslib", "../Ajax", "../Core", "../Event/Handler",
                 this.prepareNextRequest();
             }
             this.lastRequestTimestamp = data.returnValues.lastRequestTimestamp;
+            // Update the last read time for the service worker
+            (0, ServiceWorker_1.updateNotificationLastReadTime)(this.lastRequestTimestamp);
             EventHandler.fire("com.woltlab.wcf.notification", "afterPoll", pollData);
             this.showNotification(pollData);
         }
@@ -205,6 +208,9 @@ define(["require", "exports", "tslib", "../Ajax", "../Core", "../Event/Handler",
                 silent: !window.ENABLE_DEBUG_MODE,
             };
         }
+        updateLastRequestTimestamp(timestamp) {
+            this.lastRequestTimestamp = Math.max(timestamp, this.lastRequestTimestamp);
+        }
     }
     let notificationHandler;
     /**
@@ -218,6 +224,9 @@ define(["require", "exports", "tslib", "../Ajax", "../Core", "../Event/Handler",
     function enableNotifications() {
         notificationHandler.enableNotifications();
     }
+    function updateLastRequestTimestamp(timestamp) {
+        notificationHandler?.updateLastRequestTimestamp(timestamp);
+    }
     function poll() {
         notificationHandler?.dispatchRequest();
     }
diff --git a/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/ServiceWorker.js b/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/ServiceWorker.js
index 80f54f4ea4c..49e07ea7b5a 100644
--- a/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/ServiceWorker.js
+++ b/wcfsetup/install/files/js/WoltLabSuite/Core/Notification/ServiceWorker.js
@@ -5,7 +5,7 @@
  * @since 6.1
  * @woltlabExcludeBundle tiny
  */
-define(["require", "exports", "WoltLabSuite/Core/Ajax/Backend"], function (require, exports, Backend_1) {
+define(["require", "exports", "WoltLabSuite/Core/Ajax/Backend", "WoltLabSuite/Core/Notification/Handler"], function (require, exports, Backend_1, Handler_1) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.serviceWorkerSupported = serviceWorkerSupported;
@@ -26,6 +26,13 @@ define(["require", "exports", "WoltLabSuite/Core/Ajax/Backend"], function (requi
                 scope: "/",
             });
             this.#serviceWorkerRegistration = window.navigator.serviceWorker.ready;
+            window.navigator.serviceWorker.addEventListener("message", (event) => {
+                // Validate that this is a message from our service worker
+                if (!(event.source instanceof window.ServiceWorker) || event.source.scriptURL !== this.#serviceWorkerJsUrl) {
+                    return;
+                }
+                (0, Handler_1.updateLastRequestTimestamp)(event.data.time);
+            });
         }
         async register() {
             const currentSubscription = await (await this.#serviceWorkerRegistration).pushManager.getSubscription();