diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7af63409..622bf6e6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,19 +25,14 @@ jobs:
         uses: stCarolas/setup-maven@v4.5
         with:
           maven-version: 3.8.6
-      - name: Pull Request Checkout
-        uses: actions/checkout@v3
+      - name: Check out sources
+        uses: actions/checkout@v7
         with:
-          ref: ${{github.event.pull_request.head.ref}}
-          repository: ${{github.event.pull_request.head.repo.full_name}}
-        if: github.head_ref != ''
-      - name: Push Checkout
-        uses: actions/checkout@v3
-        if: github.head_ref == ''
+          fetch-depth: 1
       - name: Set up Python 3
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.9'
       - name: Set up Java
         uses: actions/setup-java@v3
         with: