diff --git a/app/manifest/v3/_base.json b/app/manifest/v3/_base.json
index 696a4d62e..1b9456fd8 100644
--- a/app/manifest/v3/_base.json
+++ b/app/manifest/v3/_base.json
@@ -67,6 +67,7 @@
   "name": "__MSG_appName__",
   "permissions": [
     "activeTab",
+    "alarms",
     "clipboardWrite",
     "notifications",
     "scripting",
diff --git a/app/scripts/controllers/app-state.js b/app/scripts/controllers/app-state.js
index 5dfdc2f70..76eab8367 100644
--- a/app/scripts/controllers/app-state.js
+++ b/app/scripts/controllers/app-state.js
@@ -2,6 +2,8 @@ import EventEmitter from 'events';
 import { ObservableStore } from '@metamask/obs-store';
 import { METAMASK_CONTROLLER_EVENTS } from '../metamask-controller';
 import { MINUTE } from '../../../shared/constants/time';
+import { AUTO_LOCK_TIMEOUT_ALARM } from '../../../shared/constants/alarms';
+import { isManifestV3 } from '../../../shared/modules/mv3.utils';
 
 export default class AppStateController extends EventEmitter {
   /**
@@ -187,21 +189,44 @@ export default class AppStateController extends EventEmitter {
    *
    * @private
    */
+  /* eslint-disable no-undef */
   _resetTimer() {
     const { timeoutMinutes } = this.store.getState();
 
     if (this.timer) {
-      clearTimeout(this.timer);
+      if (isManifestV3) {
+        chrome.alarms.clear(AUTO_LOCK_TIMEOUT_ALARM);
+      } else {
+        clearTimeout(this.timer);
+      }
     }
 
     if (!timeoutMinutes) {
       return;
     }
 
-    this.timer = setTimeout(
-      () => this.onInactiveTimeout(),
-      timeoutMinutes * MINUTE,
-    );
+    if (isManifestV3) {
+      chrome.alarms.create(AUTO_LOCK_TIMEOUT_ALARM, {
+        delayInMinutes: timeoutMinutes,
+        periodInMinutes: timeoutMinutes,
+      });
+      chrome.alarms.onAlarm.addListener(() => {
+        chrome.alarms.getAll((alarms) => {
+          const hasAlarm = alarms.find(
+            (alarm) => alarm.name === AUTO_LOCK_TIMEOUT_ALARM,
+          );
+          if (hasAlarm) {
+            this.onInactiveTimeout();
+            chrome.alarms.clear(AUTO_LOCK_TIMEOUT_ALARM);
+          }
+        });
+      });
+    } else {
+      this.timer = setTimeout(
+        () => this.onInactiveTimeout(),
+        timeoutMinutes * MINUTE,
+      );
+    }
   }
 
   /**
diff --git a/shared/constants/alarms.js b/shared/constants/alarms.js
new file mode 100644
index 000000000..c0dbbcf7e
--- /dev/null
+++ b/shared/constants/alarms.js
@@ -0,0 +1 @@
+export const AUTO_LOCK_TIMEOUT_ALARM = 'AUTO_LOCK_TIMEOUT_ALARM';