diff --git a/packages/ui-default/components/zipDownloader/index.js b/packages/ui-default/components/zipDownloader/index.js
index 817e8d7b7..c7bdc391a 100644
--- a/packages/ui-default/components/zipDownloader/index.js
+++ b/packages/ui-default/components/zipDownloader/index.js
@@ -16,11 +16,7 @@ function onBeforeUnload(e) {
   }
   e.returnValue = '';
 }
-if (window.location.protocol === 'https:'
-  || window.location.protocol === 'chrome-extension:'
-  || window.location.hostname === 'localhost') {
-  streamsaver.mitm = '/streamsaver/mitm.html';
-}
+streamsaver.mitm = `${window.isSecureContext ? '' : 'https://hydro.ac'}/streamsaver/mitm.html`;
 
 const waitForWritableStream = window.WritableStream
   ? Promise.resolve()
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 3cac71275..a54c2530a 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.41.12",
+  "version": "4.41.13",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "index.ts",
diff --git a/packages/ui-default/service-worker.ts b/packages/ui-default/service-worker.ts
index 160e4b2ab..4f3783bbb 100644
--- a/packages/ui-default/service-worker.ts
+++ b/packages/ui-default/service-worker.ts
@@ -2,8 +2,10 @@
 /// <reference lib="ES2015" />
 /// <reference types="@types/serviceworker" />
 /* global clients */
-// eslint-disable-next-line no-restricted-globals
-addEventListener('notificationclick', (event) => {
+/* eslint-disable no-restricted-globals */
+import 'streamsaver/sw.js';
+
+self.addEventListener('notificationclick', (event) => {
   console.log('On notification click: ', event.notification.tag);
   event.notification.close();
   if (!event.notification.tag.startsWith('message-')) return;