diff --git a/.github/workflows/gh_pages.yml b/.github/workflows/gh_pages.yml
index 4a3b628..00fd5ac 100644
--- a/.github/workflows/gh_pages.yml
+++ b/.github/workflows/gh_pages.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 20.x
-      - run: npm install && npm run build-ghpages
+      - run: npm ci && npm run build-ghpages
         working-directory: app
       - name: build_app
         uses: peaceiris/actions-gh-pages@v3