diff --git a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
index 27d4e41..43a3885 100644
--- a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
+++ b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
@@ -15,7 +15,7 @@
       <Version>3.2.2</Version>
     </PackageReference>
     <PackageReference Include="xunit">
-      <Version>2.6.4</Version>
+      <Version>2.9.0</Version>
     </PackageReference>
     <PackageReference Include="xunit.runner.visualstudio">
       <Version>2.5.6</Version>