diff --git a/.github/workflows/submodule-trigger-workflow.yml b/.github/workflows/submodule-trigger-workflow.yml
index 5d3b2ff..f86ebae 100644
--- a/.github/workflows/submodule-trigger-workflow.yml
+++ b/.github/workflows/submodule-trigger-workflow.yml
@@ -38,13 +38,22 @@ jobs:
   call-submodule-update:
     needs: get-commit-info
     runs-on: [self-hosted]
-    
+
     steps:
+      - name: Generate GitHub App Token
+        id: generate-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          owner: IONOS-Productivity
+          repositories: ncw-server
+
       - name: Trigger ncw-server submodule update workflow
         run: |
           curl -X POST \
             -H "Accept: application/vnd.github.v3+json" \
-            -H "Authorization: token ${{ secrets.SUBMODULE_UPDATE_PAT }}" \
+            -H "Authorization: token ${{ steps.generate-token.outputs.token }}" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
             https://api.github.com/repos/IONOS-Productivity/ncw-server/dispatches \
             -d '{