diff --git a/.gitea/workflows/on_pull_request.yaml b/.gitea/workflows/on_pull_request.yaml
index 9e44c806..7e6a8765 100644
--- a/.gitea/workflows/on_pull_request.yaml
+++ b/.gitea/workflows/on_pull_request.yaml
@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.11
+          python-version: 3.11.0
           # NB: there's no cache: pip here since we're not installing anything
           #     from the requirements.txt file(s) in the repository; it's faster
           #     not to have GHA download an (at the time of writing) 4 GB cache
diff --git a/.gitea/workflows/run_tests.yaml b/.gitea/workflows/run_tests.yaml
index bc8e3f1d..878ce575 100644
--- a/.gitea/workflows/run_tests.yaml
+++ b/.gitea/workflows/run_tests.yaml
@@ -10,7 +10,7 @@ env:
 jobs:
   test:
     name: tests on CPU
-    runs-on: ubuntu:22.04
+    runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
       - name: Checkout Code