diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 618f3599..e4961abb 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -40,6 +40,10 @@ permissions:
     pages: write
     id-token: write
 
+concurrency:
+  group: pages-${{ github.ref }}
+  cancel-in-progress: true
+
 defaults:
     run:
         shell: bash
@@ -49,6 +53,8 @@ env:
   # Specify the deployment environment:  staging or production
   HUGO_ENVIRONMENT: ${{ vars.HUGO_ENVIRONMENT || 'staging' }}
   HUGO_VERSION: 0.155.3
+  # Temporary to validate Node.js 24 works correctly
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
   # ----------------------------------------------------------------------------
@@ -57,27 +63,34 @@ jobs:
   #
   check:
     outputs:
-      zoteroVersion: ${{ fromJson(steps.zoteroVersion.outputs.headers).last-modified-version }}
-      cacheHit: ${{ steps.cache-zotero-bib.outputs.cache-hit }}
+      zoteroVersion: ${{ steps.zoteroVersion.outputs.version }}
+      cacheHit: ${{ steps.cache-zotero.outputs.cache-hit }}
 
     runs-on: ubuntu-latest
     steps:
 
       - name: Get Zotero Version Information
         id: zoteroVersion
-        uses: fjogeleit/http-request-action@v1
-        with:
-          url: https://api.zotero.org/groups/2914042/items?format=versions
-          method: GET
-        
+        run: |
+          set -euo pipefail
+          VERSION=$(curl -fsSLI "https://api.zotero.org/groups/2914042/items?format=versions" \
+            | grep -i "last-modified-version" \
+            | cut -d: -f2 \
+            | tr -d $'\r ' )
+          if [[ -z "${VERSION:-}" ]]; then
+            echo "Error: Failed to determine Zotero Last-Modified-Version from API response." >&2
+            exit 1
+          fi
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
       - name: Cache Zotero Bibliography
         id: cache-zotero
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           lookup-only: true
           path: |
             content/en/history/bibliography
-          key: bib-${{ fromJson(steps.zoteroVersion.outputs.headers).last-modified-version }}
+          key: bib-${{ steps.zoteroVersion.outputs.version }}
 
   # ----------------------------------------------------------------------------
   # Validate that README.md references the correct Hugo version.
@@ -87,7 +100,7 @@ jobs:
     if: github.event_name == 'push' || github.event_name == 'pull_request'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check Hugo version consistency
         run: |
@@ -121,14 +134,14 @@ jobs:
     if: always() && (github.event_name == 'push' || github.event_name == 'pull_request' || needs.check.outputs.cacheHit != 'true') && (needs.validate-docs.result == 'success' || needs.validate-docs.result == 'skipped') && (needs.check.result == 'success' || needs.check.result == 'skipped')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
           fetch-depth: 0
 
       - name: Cache Zotero Bibliography
         id: cache-bib
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             static/data/bibliography.json
@@ -157,22 +170,23 @@ jobs:
         uses: actions/configure-pages@v5
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
-          node-version: 18
-      
-      - run: npm install -g autoprefixer --save-dev  
-      - run: npm install -g postcss-cli --save-dev
-      - run: npm install --verbose
+          node-version: 24
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: |
+          npm ci
 
       - name: Build
         env:
           HUGO_CACHEDIR: ${{ runner.temp }}/hugo_cache
-          TZ: America/New York
+          TZ: America/New_York
         run: hugo --cleanDestinationDir -e $HUGO_ENVIRONMENT
         
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./public