diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index c59f7a00b..ef97e09ca 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - name: Checking submodules
+      uses: textbook/git-checkout-submodule-action@2.1.1
     - name: Setup .NET
       uses: actions/setup-dotnet@v1
       with: