diff --git a/.github/workflows/ci-pr.yaml b/.github/workflows/ci-pr.yaml
index 2c74ec0cd..5b94279ab 100644
--- a/.github/workflows/ci-pr.yaml
+++ b/.github/workflows/ci-pr.yaml
@@ -6,7 +6,7 @@ on:
 env:
   # Please make sure this version is included in the `matrix`, as the
   # `matrix` section can't use `env`, so it must be entered manually
-  DEFAULT_PYTHON_VERSION: '3.11'
+  DEFAULT_PYTHON_VERSION: '3.13'
   # It would be nice to be able to also define a DEFAULT_UBUNTU_VERSION
   # but sadly `env` can't be used either in `runs-on`.
 
@@ -19,8 +19,8 @@ jobs:
       - name: Run nox
         uses: frequenz-floss/gh-action-nox@v1.0.0
         with:
-          python-version: "3.11"
-          nox-session: ci_checks_max
+          python-version: "3.13"
+          nox-session: pytest_min
 
   test-docs:
     name: Test documentation website generation