diff --git a/tests/GridSim.Tests/GridSim.Tests.csproj b/tests/GridSim.Tests/GridSim.Tests.csproj
index fa1698c..8df1b31 100644
--- a/tests/GridSim.Tests/GridSim.Tests.csproj
+++ b/tests/GridSim.Tests/GridSim.Tests.csproj
@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>