diff --git a/.github/workflows/check_and_update_json_date.yml b/.github/workflows/check_and_update_json_date.yml
index 79171041..4d9fda5b 100644
--- a/.github/workflows/check_and_update_json_date.yml
+++ b/.github/workflows/check_and_update_json_date.yml
@@ -1,7 +1,7 @@
 name: Update JSON Date and Push Changes
 
 on:
-  push:
+  pull_request:
     branches:
       - main
 
@@ -10,32 +10,26 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Generate a token
-        id: generate-token
-        uses: actions/create-github-app-token@v1
-        with:
-          app-id: ${{ secrets.JSON_APP_ID }}
-          private-key: ${{ secrets.JSON_APP_KEY }}
-
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }} 
 
       - name: Set up authentication
         env:
-          GH_TOKEN: ${{ steps.generate-token.outputs.token }}
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}
         run: |
-          git config --global user.name "github-actions[bot]"
-          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "json-updater-bot"
+          git config --global user.email "json-updater-bot@users.noreply.github.com"
           git config --global credential.helper 'store'
-          echo "https://github-actions[bot]:$GH_TOKEN@github.com" > ~/.git-credentials
+          echo "https://json-updater-bot:$GH_TOKEN@github.com" > ~/.git-credentials
 
-      - name: Modify JSON file(s)
+      - name: Modify JSON files
         run: |
           TODAY=$(date -u +%Y-%m-%d)
-          for json_file in $(find . -type f -name "*.json"); do
-            # Ensure the JSON structure is an object
+          # Filtern der geänderten Dateien im aktuellen PR
+          for json_file in $(git diff --name-only origin/main...$GITHUB_SHA | grep '.json$'); do
             if jq -e 'type == "object"' "$json_file" > /dev/null 2>&1; then
-              # Update the date_created field
               jq --arg today "$TODAY" '.date_created = $today' "$json_file" > tmp.json && mv tmp.json "$json_file"
             fi
           done
@@ -44,4 +38,4 @@ jobs:
         run: |
           git add *.json
           git commit -m "Update date_created to $TODAY"
-          git push origin main
+          git push origin ${{ github.head_ref }}  # Push direkt in den PR-Branch