diff --git a/.github/workflows/harness-ci.yml b/.github/workflows/harness-ci.yml
index 085c112..762852f 100644
--- a/.github/workflows/harness-ci.yml
+++ b/.github/workflows/harness-ci.yml
@@ -20,6 +20,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Setup Node.js
         uses: actions/setup-node@v4