diff --git a/.gitea/workflows/python-pep8.yaml b/.gitea/workflows/python-pep8.yaml
index 52c3799..ac5119b 100644
--- a/.gitea/workflows/python-pep8.yaml
+++ b/.gitea/workflows/python-pep8.yaml
@@ -4,12 +4,14 @@ on: [push]
 
 jobs:
   Pyhton-PEP8:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu:22.04
 
     steps:
       - name: Checkout
         uses: actions/checkout@v3
       - uses: https://github.com/actions/setup-python@v4
+        with:
+          python-version: '3.9'
 
       - name: Install dependencies
         run: |