diff --git a/.github/workflows/hugo.yml b/.github/workflows/hugo.yml
index 55eee8078d..5d7b4de6d1 100644
--- a/.github/workflows/hugo.yml
+++ b/.github/workflows/hugo.yml
@@ -4,6 +4,13 @@ on:
   push:
     branches:
       - main
+  repository_dispatch:
+    types: [groma-architecture-updated]
+  workflow_dispatch: {}
+
+concurrency:
+  group: github-pages
+  cancel-in-progress: true
 
 jobs:
   deploy:
@@ -14,6 +21,18 @@ jobs:
           submodules: true  # Fetch Hugo themes (true or recursive)
           fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
 
+      - name: Checkout Pi4J (for its Groma architecture map)
+        uses: actions/checkout@v4
+        with:
+          repository: Pi4J/pi4j
+          path: pi4j-src
+
+      - name: Export Groma architecture map
+        working-directory: pi4j-src
+        run: |
+          npm i -g groma.md@0.6.6
+          groma export --url "https://www.pi4j.com/groma" "$GITHUB_WORKSPACE/static/groma"
+
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v3
         with:
diff --git a/.gitignore b/.gitignore
index 27f85d43b3..85d8026c22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,9 @@ bin
 # Hugo build output (regenerated by CI on every push)
 /public/
 
+# Groma architecture map (regenerated by CI from Pi4J/pi4j)
+/static/groma/
+
 # IntelliJ files
 .idea
 *.iml