diff --git a/tests/UTF-unknown.Tests.csproj b/tests/UTF-unknown.Tests.csproj
index a24fd6d..e2c93e2 100644
--- a/tests/UTF-unknown.Tests.csproj
+++ b/tests/UTF-unknown.Tests.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="NUnit" Version="4.6.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />