diff --git a/.github/workflows/publish_gh_pages.yml b/.github/workflows/publish_gh_pages.yml
index 089cdbc..cbed168 100644
--- a/.github/workflows/publish_gh_pages.yml
+++ b/.github/workflows/publish_gh_pages.yml
@@ -15,10 +15,12 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 1
-      - name: Use Node.js
+      - name: Extract node version
+        run: echo "NODE_VERSION=$(cat .node_version)" >> $GITHUB_ENV
+      - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: ${{ env.NODE_VERSION }}
       - name: Build page
         run: |
           npm ci