diff --git a/packages/client/vite.config.ts b/packages/client/vite.config.ts
index c66c5ccc2..f23c62113 100644
--- a/packages/client/vite.config.ts
+++ b/packages/client/vite.config.ts
@@ -49,7 +49,7 @@ export default defineConfig(({ command, mode }) => {
 				'chrome100',
 				'firefox100',
 				'safari15',
-				'es2017',
+				'es2017', // TODO: そのうち消す
 			],
 			manifest: 'manifest.json',
 			rollupOptions: {