diff --git a/QuickMail.Tests/QuickMail.Tests.csproj b/QuickMail.Tests/QuickMail.Tests.csproj
index be36ae02..ff69de01 100644
--- a/QuickMail.Tests/QuickMail.Tests.csproj
+++ b/QuickMail.Tests/QuickMail.Tests.csproj
@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="10.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
     <!-- STA-thread fact attribute for WPF tests -->