diff --git a/src/web/assets/help.js b/src/web/assets/404.js
similarity index 73%
rename from src/web/assets/help.js
rename to src/web/assets/404.js
index 475c506789..46fd004f14 100644
--- a/src/web/assets/help.js
+++ b/src/web/assets/404.js
@@ -2,6 +2,13 @@ const yn = window.confirm(
'サーバー上に存在しないスクリプトがリクエストされました。お使いのMisskeyのバージョンが古いことが原因の可能性があります。Misskeyを更新しますか？');
if (yn) {
+ // Clear cache (serive worker)
+ try {
+ navigator.serviceWorker.controller.postMessage('clear');
+ } catch (e) {
+ console.error(e);
+ }
+
location.reload(true);
} else {
alert('問題が解決しない場合はサーバー管理者までお問い合せください。');
diff --git a/src/web/assets/recover.html b/src/web/assets/recover.html
new file mode 100644
index 0000000000..8042d438c4
--- /dev/null
+++ b/src/web/assets/recover.html
@@ -0,0 +1,32 @@
+
+
+
+
+
+ Misskeyのリカバリ
+
+
+
diff --git a/src/web/server.ts b/src/web/server.ts
index 791b75ce09..1d3687f89e 100644
--- a/src/web/server.ts
+++ b/src/web/server.ts
@@ -39,11 +39,13 @@ app.get('/apple-touch-icon.png', (req, res) => res.sendFile(`${__dirname}/assets
app.use('/assets', express.static(`${__dirname}/assets`, {
maxAge: ms('7 days')
}));
-app.use('/assets/*.js', (req, res) => res.sendFile(`${__dirname}/assets/help.js`));
+app.use('/assets/*.js', (req, res) => res.sendFile(`${__dirname}/assets/404.js`));
app.use('/assets', (req, res) => {
res.sendStatus(404);
});
+app.use('/recover', (req, res) => res.sendFile(`${__dirname}/assets/recover.html`));
+
/**
* ServiceWroker
*/