diff --git a/.github/workflows/doc_build.yml b/.github/workflows/doc_build.yml
index 1cc1885..641c62a 100644
--- a/.github/workflows/doc_build.yml
+++ b/.github/workflows/doc_build.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Set up Python 3.10
         uses: actions/setup-python@v3
         with:
-          python-version: 3.10
+          python-version: ["3.10"]
       - name: Install dependencies
         run: |
           python -m pip install .[docs]