diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 81eacb2..3c21844 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -27,7 +27,7 @@ jobs:
 
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.10
+          python-version: '3.9'
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@v2.6.0