diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 19960c0..1bcfd13 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,23 +1,23 @@
 name: Build
 
 on:
-  push:
-    branches: [ master ]
-
   pull_request:
     branches: [ master ]
 
 jobs:
   build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     env:
         DOTNET_NOLOGO: true
         DOTNET_CLI_TELEMETRY_OPTOUT: 1
 
     steps:
     - name: Checkout source code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Test
-      run: dotnet test ./040.Irony.Tests.VsTest.csproj -c release
+      run: dotnet test ./Irony.Tests/040.Irony.Tests.VsTest.csproj -c release
diff --git a/Irony.Tests/EvaluatorTests.cs b/Irony.Tests/EvaluatorTests.cs
index e2ab49e..b3dd542 100644
--- a/Irony.Tests/EvaluatorTests.cs
+++ b/Irony.Tests/EvaluatorTests.cs
@@ -124,7 +124,7 @@ public void TestEvaluator_BuiltIns() {
       script = @"print(format('{0} * {1} = {2}', 3, 4, 3 * 4))";
       eval.Evaluate(script);
       result = eval.GetOutput(); 
-      Assert.AreEqual("3 * 4 = 12\r\n", result, "Unexpected computation result");
+      Assert.AreEqual("3 * 4 = 12" + Environment.NewLine, result, "Unexpected computation result");
 
       //Add custom built-in method SayHello and test it
       eval.Runtime.BuiltIns.AddMethod(SayHello, "SayHello", 1, 1, "name"); 
diff --git a/ReadMe.md b/ReadMe.md
index 2fbb515..db1aa03 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -1,9 +1,8 @@
 # Irony — .NET Language Implementation Kit
 https://github.com/IronyProject/Irony
 
-[![appveyor](https://ci.appveyor.com/api/projects/status/github/ironyproject/irony?svg=true)](https://ci.appveyor.com/project/yallie/irony)
-[![tests](https://img.shields.io/appveyor/tests/yallie/irony.svg)](https://ci.appveyor.com/project/yallie/irony/build/tests)
-[![nuget](https://img.shields.io/nuget/v/Irony.svg)](https://www.nuget.org/packages/Irony)
+[![Github Actions](https://github.com/IronyProject/Irony/actions/workflows/build.yml/badge.svg)](https://github.com/IronyProject/Irony/actions)
+[![Nuget](https://img.shields.io/nuget/v/Irony.svg)](https://www.nuget.org/packages/Irony)
 
 ### Prerequisites