diff --git a/packages/extension-koni/src/helper/ActionHandler.ts b/packages/extension-koni/src/helper/ActionHandler.ts
index dd0f54bfc5..a5e73d177f 100644
--- a/packages/extension-koni/src/helper/ActionHandler.ts
+++ b/packages/extension-koni/src/helper/ActionHandler.ts
@@ -4,6 +4,8 @@
 import { MessageTypes, RequestSignatures, TransportRequestMessage } from '@subwallet/extension-base/background/types';
 import { PORT_CONTENT, PORT_EXTENSION } from '@subwallet/extension-base/defaults';
 import { SWHandler } from '@subwallet/extension-base/koni/background/handlers';
+import { sendMessage } from '@subwallet/extension-base/page';
+import { isFirefox } from '@subwallet/extension-base/utils';
 import { createPromiseHandler } from '@subwallet/extension-base/utils/promise';
 import { startHeartbeat, stopHeartbeat } from '@subwallet/extension-koni/helper/HeartBeat';
 
@@ -92,7 +94,9 @@ export class ActionHandler {
 
       if (!this.isActive) {
         this.isActive = true;
-        startHeartbeat();
+        startHeartbeat(async () => {
+          await (isFirefox ? sendMessage('pub(ping)', null) : chrome.storage.local.set({ 'last-heartbeat': new Date().getTime() }));
+        });
         this.mainHandler && await this.mainHandler.state.wakeup();
         this.waitActiveHandler.resolve(true);
       }
diff --git a/packages/extension-koni/src/helper/HeartBeat.ts b/packages/extension-koni/src/helper/HeartBeat.ts
index e45211e037..3559f11edf 100644
--- a/packages/extension-koni/src/helper/HeartBeat.ts
+++ b/packages/extension-koni/src/helper/HeartBeat.ts
@@ -3,6 +3,8 @@
 
 // These code from https://developer.chrome.com/docs/extensions/develop/migrate/to-service-workers#keep-sw-alive
 
+import { isFirefox } from '@subwallet/extension-base/utils';
+
 /**
  * Tracks when a service worker was last alive and extends the service worker
  * lifetime by writing the current time to extension storage every 20 seconds.
@@ -13,8 +15,20 @@
 
 let heartbeatInterval: NodeJS.Timer | undefined;
 
-async function runHeartbeat () {
-  await chrome.storage.local.set({ 'last-heartbeat': new Date().getTime() });
+async function runHeartbeat (cb: () => Promise<void>) {
+  if (isFirefox) {
+    await chrome.alarms.create('keep-loaded-alarm', {
+      periodInMinutes: 0.3
+    });
+
+    chrome.alarms.onAlarm.addListener((alarm) => {
+      if (alarm.name === 'keep-loaded-alarm') {
+        cb().catch(() => console.error('Failed to load alarms'));
+      }
+    });
+  } else {
+    await cb();
+  }
 }
 
 /**
@@ -22,22 +36,32 @@ async function runHeartbeat () {
  * this sparingly when you are doing work which requires persistence, and call
  * stopHeartbeat once that work is complete.
  */
-export function startHeartbeat () {
+export function startHeartbeat (cb: () => Promise<void>) {
   // Run the heartbeat once at service worker startup.
   if (heartbeatInterval) {
     clearInterval(heartbeatInterval);
   }
 
-  runHeartbeat().then(() => {
-    // Then again every 20 seconds.
-    heartbeatInterval = setInterval(() => {
-      runHeartbeat().catch(console.error);
-    }, 20 * 1000);
+  runHeartbeat(cb).then(() => {
+    if (!isFirefox) {
+      heartbeatInterval = setInterval(() => {
+        runHeartbeat(cb).catch(console.error);
+      }, 20 * 1000);
+    }
   }).catch(console.error);
 }
 
 export function stopHeartbeat () {
-  clearInterval(heartbeatInterval);
+  if (isFirefox) {
+    chrome.alarms.clear('keep-loaded-alarm', function (wasCleared) {
+      if (wasCleared) {
+        console.log('Alarm was cleared');
+      }
+    });
+  } else {
+    clearInterval(heartbeatInterval);
+  }
+
   heartbeatInterval = undefined;
 }
 
diff --git a/scripts/koni-ci-mv3-firefox.mjs b/scripts/koni-ci-mv3-firefox.mjs
index b9a9eb1096..a36a1557e5 100755
--- a/scripts/koni-ci-mv3-firefox.mjs
+++ b/scripts/koni-ci-mv3-firefox.mjs
@@ -25,7 +25,7 @@ async function updateManifest() {
       delete manifest.web_accessible_resources[0].use_dynamic_url;
     }
     manifest.permissions.push("activeTab");
-    manifest = {...manifest, host_permissions : ["<all_urls>"], optional_permissions : ["activeTab"]};
+    manifest = {...manifest, host_permissions : ["<all_urls>"], optional_permissions : ["activeTab", "alarms"]};
 
     if(manifest.content_scripts && manifest.content_scripts.length > 0) {
       manifest.content_scripts[0].js.push("injectGlobal.js");