diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index a38f7f17..0531adb8 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -9,6 +9,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
+      with:
+        submodules: recursive
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with: