diff --git a/packages/backend/src/server/api/endpoints/admin/roles/clone.ts b/packages/backend/src/server/api/endpoints/admin/roles/clone.ts
index 83a7a54c3a..a1e77a90ce 100644
--- a/packages/backend/src/server/api/endpoints/admin/roles/clone.ts
+++ b/packages/backend/src/server/api/endpoints/admin/roles/clone.ts
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { Inject, Injectable } from '@nestjs/common';
 import { RoleService } from '@/core/RoleService.js';
 import { DI } from '@/di-symbols.js';