diff --git a/.gitea/workflows/tests.yaml b/.gitea/workflows/tests.yaml
index be3e643..2a20d82 100644
--- a/.gitea/workflows/tests.yaml
+++ b/.gitea/workflows/tests.yaml
@@ -4,15 +4,14 @@ on: [push, workflow_dispatch]
 
 jobs:
   unittests:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-      - run: env | sort
       - name: Check out repository code
         uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13.1"
+          python-version: "3.10.12"
         env:
           AGENT_TOOLSDIRECTORY: /opt/hostedtoolcache
       - name: Installing dependencies