diff --git a/README.md b/README.md
index 9567de3..4d1809f 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ docker-compose up -d
 4. Composer と yarn を使い必要なライブラリをインストールします。
 
 ```
+docker-compose exec web composer global require hirak/prestissimo
 docker-compose exec web composer install
 docker-compose exec web yarn install
 ```