diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 8b4d5597..c20d2b57 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -15,7 +15,7 @@ jobs:
           # 2022-01-06 this is currently an OK choice, but it will need to be
           # updated eventually as the ecosystem moves. Keep in sync with the
           # version in pyproject.toml.
-          python-version: 3.10
+          python-version: '3.10'
       - name: Install Poetry
         uses: abatilo/actions-poetry@v2.1.4
       - name: Install Python dependencies