diff --git a/.github/workflows/dotnet-core.yml b/.github/workflows/dotnet-core.yml
index 717fe12..2d6e413 100644
--- a/.github/workflows/dotnet-core.yml
+++ b/.github/workflows/dotnet-core.yml
@@ -8,9 +8,10 @@ on:
 
 jobs:
   build:
-
-    runs-on: ubuntu-latest
-    
+    strategy:
+     matrix:
+      os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - name: Setup .NET Core 3.1