diff --git a/DIDemo.Services.Tests/DIDemo.Services.Tests.csproj b/DIDemo.Services.Tests/DIDemo.Services.Tests.csproj
index 5c7bea5..bc62635 100644
--- a/DIDemo.Services.Tests/DIDemo.Services.Tests.csproj
+++ b/DIDemo.Services.Tests/DIDemo.Services.Tests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="4.1.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="4.1.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.2.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="4.2.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\DIDemoServices\DIDemoServices.csproj" />
diff --git a/DIDemo.Tests/DIDemo.Tests.csproj b/DIDemo.Tests/DIDemo.Tests.csproj
index 557b45c..950b0e5 100644
--- a/DIDemo.Tests/DIDemo.Tests.csproj
+++ b/DIDemo.Tests/DIDemo.Tests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="4.1.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="4.1.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.2.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="4.2.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\DIDemo\DIDemo.csproj" />