diff --git a/.github/workflows/data_update.yml b/.github/workflows/data_update.yml
index 2df6a03a509..c076c1d50fd 100644
--- a/.github/workflows/data_update.yml
+++ b/.github/workflows/data_update.yml
@@ -1,26 +1,40 @@
-name: Run Python Script
+name: update data
 
 on:
-  push:
-    branches:
-      - main
+  schedule:
+    # TODO: should run at 0:00 6:00 12:00 and 16:00 o'clock every day.
+    - cron: '0 8 * * 1'
+  workflow_dispatch:
 
 jobs:
   run-python:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.x'
+          python-version: '3.10'
 
       - name: Install Dependencies
         run: pip install -r requirements.txt
 
-      - name: Run Python Script
+      - name: Fetch Data
         env:
           API_KEY: ${{ secrets.API_KEY }}
-        run: python your_script.py
+          CLIENT_ID: ${{ secrets.CLIENT_ID }}
+        run: python fetch_data.py
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v4
+        with:
+          add-paths: |
+            data/*
+          commit-message: data update
+          committer: GitHub <noreply@github.com>
+          author: ${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>
+          delete-branch: true
+          title: 'Update Deutsche Bahn data'
+          body: 'Update Deutsche Bahn data'
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000000..663bd1f6a2a
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+requests
\ No newline at end of file