diff --git a/sdk/dotnet/test/AgentHooks.Tests/AgentHooks.Tests.csproj b/sdk/dotnet/test/AgentHooks.Tests/AgentHooks.Tests.csproj
index 016fc53..71a0bda 100644
--- a/sdk/dotnet/test/AgentHooks.Tests/AgentHooks.Tests.csproj
+++ b/sdk/dotnet/test/AgentHooks.Tests/AgentHooks.Tests.csproj
@@ -5,7 +5,7 @@
   <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" />
     <ProjectReference Include="..\..\src\AgentHooks\AgentHooks.csproj" />
     <ProjectReference Include="..\..\src\AgentHooks.Conformance\AgentHooks.Conformance.csproj" />
   </ItemGroup>
diff --git a/sdk/dotnet/test/AgentHooks.Tests/packages.lock.json b/sdk/dotnet/test/AgentHooks.Tests/packages.lock.json
index 88a17d2..bc6727c 100644
--- a/sdk/dotnet/test/AgentHooks.Tests/packages.lock.json
+++ b/sdk/dotnet/test/AgentHooks.Tests/packages.lock.json
@@ -25,9 +25,9 @@
       },
       "xunit.runner.visualstudio": {
         "type": "Direct",
-        "requested": "[3.1.5, )",
-        "resolved": "3.1.5",
-        "contentHash": "tKi7dSTwP4m5m9eXPM2Ime4Kn7xNf4x4zT9sdLO/G4hZVnQCRiMTWoSZqI/pYTVeI27oPPqHBKYI/DjJ9GsYgA=="
+        "requested": "[4.0.0, )",
+        "resolved": "4.0.0",
+        "contentHash": "kzLFyBYUnoidpGOXvpNOfIo8C92gVgVR6X8ncHwhcrDYugiOut5rrhDkr0L3cWHd7J2pKXf6LgaeXoBBDlx1ag=="
       },
       "Microsoft.CodeCoverage": {
         "type": "Transitive",