diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fb33388b..9bc8baed 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,8 @@ jobs:
 
       - name: Install Python
         uses: actions/setup-python@v5
+        with:
+          python-version: '3.9.13'
 
       - name: Upgrade pip
         run: python -m pip install --upgrade pip