diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 567d6ac..7c43fc1 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -26,6 +26,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: true
       - name: Install coverage dependencies
         if: ${{ matrix.os == 'ubuntu-latest' }}
         run: |