diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 8563c4b..e4252f4 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -6,6 +6,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: true
       - uses: actions-rs/toolchain@v1
       - uses: actions-rs/cargo@v1
         with: