diff --git a/test/MimeMapping.Tests/MimeMapping.Tests.csproj b/test/MimeMapping.Tests/MimeMapping.Tests.csproj
index f3e55b9..63d7e44 100644
--- a/test/MimeMapping.Tests/MimeMapping.Tests.csproj
+++ b/test/MimeMapping.Tests/MimeMapping.Tests.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="4.2.1" />
     <PackageReference Include="MSTest.TestFramework" Version="4.2.1" />
   </ItemGroup>