diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index e422186..9fce2e6 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -8,6 +8,8 @@ jobs:
     runs-on: windows-latest
 
     steps:
+    - uses: actions/checkout@v2
+    
     - name: setup-msbuild
       uses: microsoft/setup-msbuild@v1