diff --git a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
index bb206f4..814aedf 100644
--- a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
+++ b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
@@ -11,7 +11,7 @@
     <ProjectReference Include="..\MessagePack.NodaTime\MessagePack.NodaTime.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
     <PackageReference Include="xunit.v3">
       <Version>3.2.2</Version>
     </PackageReference>