diff --git a/.github/workflows/quality.yaml b/.github/workflows/quality.yaml
index 3f18cdb..ac61b4e 100644
--- a/.github/workflows/quality.yaml
+++ b/.github/workflows/quality.yaml
@@ -23,19 +23,21 @@ jobs:
       matrix:
         python-version: [3.9, 3.10, 3.11, 3.12, 3.13]
         include:
-          - python-version: 3.9
+          - python-version: "3.9"
             name: "Python 3.9"
-          - python-version: 3.10
+          - python-version: "3.10"
             name: "Python 3.10"
-          - python-version: 3.11
+          - python-version: "3.11"
             name: "Python 3.11"
-          - python-version: 3.12
+          - python-version: "3.12"
             name: "Python 3.12"
-          - python-version: 3.13
+          - python-version: "3.13"
             name: "Python 3.13"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: "Set up Python"
         uses: actions/setup-python@v5