diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 504755b..5223663 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,7 +16,7 @@ jobs:
 
     - uses: actions/checkout@v4
       with:
-        submodules: 'true'
+        submodules: 'recursive'
 
     - name: pip install
       run: |