diff --git a/.github/workflows/deploy-github-pages.yml b/.github/workflows/deploy-github-pages.yml
index 539a304..5107d3b 100644
--- a/.github/workflows/deploy-github-pages.yml
+++ b/.github/workflows/deploy-github-pages.yml
@@ -54,6 +54,10 @@ jobs:
       - name: Install Node.js dependencies
         run: "[[ -f package-lock.json || -f npm-shrinkwrap.json ]] && npm ci || true"
 
+      - name: Install Node.js dependencies
+        run: |
+          npm install -g postcss postcss-cli autoprefixer
+
       - name: Install PostCSS
         run: npm install -g postcss postcss-cli autoprefixer