diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 84ec2d5b..0df598e2 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.x
+          python-version: 3.9
 
       - name: Install dependencies
         run: |
@@ -36,4 +36,4 @@ jobs:
         with:
           publish_branch: gh-pages
           personal_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./docs/build/
\ No newline at end of file
+          publish_dir: ./docs/build/