diff --git a/.github/workflows/build_650.yml b/.github/workflows/build_650.yml
index d5d555d..49b98fa 100644
--- a/.github/workflows/build_650.yml
+++ b/.github/workflows/build_650.yml
@@ -24,6 +24,8 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v3
+        with:
+          submodules: true
 
       # Runs a set of commands using the runners shell
       - name: build