diff --git a/Testing/Acceptance/GenHTTP.Testing.Acceptance.csproj b/Testing/Acceptance/GenHTTP.Testing.Acceptance.csproj
index 7f376889..a3721b08 100644
--- a/Testing/Acceptance/GenHTTP.Testing.Acceptance.csproj
+++ b/Testing/Acceptance/GenHTTP.Testing.Acceptance.csproj
@@ -36,7 +36,7 @@
         <PackageReference Include="Microsoft.OpenApi" Version="2.3.4" />
         <PackageReference Include="Microsoft.OpenApi.YamlReader" Version="2.3.4" />
 
-        <PackageReference Include="MSTest" Version="3.11.0" />
+        <PackageReference Include="MSTest" Version="4.0.0" />
 
         <PackageReference Include="NSubstitute" Version="5.3.0" />