diff --git a/cli/reset-password.js b/cli/reset-password.js
new file mode 100644
index 0000000000..d94c90f3d5
--- /dev/null
+++ b/cli/reset-password.js
@@ -0,0 +1,29 @@
+const mongo = require('mongodb');
+const bcrypt = require('bcryptjs');
+const User = require('../built/models/user').default;
+
+const args = process.argv.slice(2);
+
+const user = args[0];
+
+const q = user.startsWith('@') ? {
+	username: user.split('@')[1],
+	host: user.split('@')[2] || null
+} : { _id: new mongo.ObjectID(user) };
+
+console.log(`Resetting password for ${user}...`);
+
+const passwd = 'yo';
+
+// Generate hash of password
+const hash = bcrypt.hashSync(passwd);
+
+User.update(q, {
+	$set: {
+		password: hash
+	}
+}).then(() => {
+	console.log(`Password of ${user} is now '${passwd}'`);
+}, e => {
+	console.error(e);
+});
diff --git a/docs/manage.en.md b/docs/manage.en.md
index 9a4277b399..a7296ce479 100644
--- a/docs/manage.en.md
+++ b/docs/manage.en.md
@@ -29,6 +29,11 @@ node cli/suspend @syuilo
 node cli/suspend @syuilo@misskey.xyz
 ```
 
+## Reset password
+``` shell
+node cli/reset-password (User-ID or Username)
+```
+
 ## Clean up cached remote files
 ``` shell
 node cli/clean-cached-remote-files
diff --git a/docs/manage.ja.md b/docs/manage.ja.md
index 924c567d14..f289037ad3 100644
--- a/docs/manage.ja.md
+++ b/docs/manage.ja.md
@@ -29,6 +29,11 @@ node cli/suspend @syuilo
 node cli/suspend @syuilo@misskey.xyz
 ```
 
+## ユーザーのパスワードをリセットする
+``` shell
+node cli/reset-password (ユーザーID または ユーザー名)
+```
+
 ## キャッシュされたリモートファイルをクリーンアップする
 ``` shell
 node cli/clean-cached-remote-files