diff --git a/.github/workflows/project-build-mac.yml b/.github/workflows/project-build-mac.yml
index 49b883f..ec82a81 100644
--- a/.github/workflows/project-build-mac.yml
+++ b/.github/workflows/project-build-mac.yml
@@ -12,6 +12,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+      with:
+        submodules: 'true'
     - name: install pre-reqs
       run: brew install cmake
     - name: build step