diff --git a/.gitea/workflows/build-demo.yaml b/.gitea/workflows/build-demo.yaml
index aa009a3..5de1db4 100644
--- a/.gitea/workflows/build-demo.yaml
+++ b/.gitea/workflows/build-demo.yaml
@@ -3,7 +3,7 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ubuntu20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout master
         uses: https://gitea.com/actions/checkout@v4
@@ -11,7 +11,7 @@ jobs:
       - name: Setup Python
         uses: https://gitea.com/actions/setup-python@v2
         with:
-          python-version: 3.9.1
+          python-version: 3.9.12
 
       - name: Install Material for MkDocs
         run: pip install mkdocs-material