diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 120282f..533b4df 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,6 +15,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
+        with:
+          submodules: `true`
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: