diff --git a/MyNumberNET_Test/MyNumberNET_Test.csproj b/MyNumberNET_Test/MyNumberNET_Test.csproj
index 68d2722..6ba6168 100644
--- a/MyNumberNET_Test/MyNumberNET_Test.csproj
+++ b/MyNumberNET_Test/MyNumberNET_Test.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="4.1.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.2.1" />
     <PackageReference Include="MSTest.TestFramework" Version="4.2.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
   </ItemGroup>