diff --git a/.github/workflows/publish-helm-charts.yaml b/.github/workflows/publish-helm-charts.yaml
index df2d8ce..dd7b294 100644
--- a/.github/workflows/publish-helm-charts.yaml
+++ b/.github/workflows/publish-helm-charts.yaml
@@ -13,6 +13,11 @@ jobs:
           # determining the number of commits since the last tag
           fetch-depth: 0
 
+      # Use an up-to-date version of Python for the script
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
       # This action packages and pushes the chart
       - name: Publish charts
         run: ./scripts/publish-charts.py