diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ac52e9b..18dea81 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,9 +20,11 @@ jobs:
         uses: actions/checkout@v3
       - name: Set up Python
         uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
       - run:
-          python -m pip install flake8 flake8-import-order doc8 sphinx
-            rstcheck[sphinx]
+          python -m pip install --upgrade flake8 flake8-import-order
+            doc8 sphinx rstcheck[sphinx]
       - run: python -m pip install .
       - run: flake8 .
       - run: doc8 $(git ls-files '*.rst')
diff --git a/docs/disable_with_comments.rst b/docs/disable_with_comments.rst
index 5ba2449..020d5c8 100644
--- a/docs/disable_with_comments.rst
+++ b/docs/disable_with_comments.rst
@@ -117,7 +117,7 @@ post-template processing).
 Example of a Jinja2 code that cannot be parsed as YAML because it contains
 invalid tokens ``{%`` and ``%}``:
 
-.. code-block:: yaml
+.. code-block:: text
 
  # This file IS NOT valid YAML and will procuce syntax errors
  {% if extra_info %}