diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 101e0fd1a..ec80c992f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -128,6 +128,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+        with:
+          submodules: recursive
 
       - name: Set up Python
         uses: actions/setup-python@v4