diff --git a/.github/workflows/easycloud-build.yml b/.github/workflows/easycloud-build.yml
index 542e7b3f3d04c..7b6743694250c 100644
--- a/.github/workflows/easycloud-build.yml
+++ b/.github/workflows/easycloud-build.yml
@@ -72,6 +72,16 @@ jobs:
           npm run build
           cd ../..
 
+      - name: Install dependencies & build IONOS theme custom elements
+        env:
+          CYPRESS_INSTALL_BINARY: 0
+          PUPPETEER_SKIP_DOWNLOAD: true
+        run: |
+          cd themes/nc-ionos-theme/IONOS
+          npm ci
+          npm run build
+          cd ../..
+
       - name: Add config partials
         run: |
           cp IONOS/configs/*.config.php config/