diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 1f3f3c8..35d97f3 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -11,6 +11,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v3
+        with:
+          python-version: 3.8
       - name: Install dependencies
         run: |
           pip install sphinx sphinx_rtd_theme myst_parser