diff --git a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
index 1350a7d..e0cf410 100644
--- a/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
+++ b/MessagePack.NodaTime.Tests/MessagePack.NodaTime.Tests.csproj
@@ -14,10 +14,10 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="MSTest.TestAdapter">
-      <Version>3.6.3</Version>
+      <Version>3.6.4</Version>
     </PackageReference>
     <PackageReference Include="MSTest.TestFramework">
-      <Version>3.6.3</Version>
+      <Version>3.6.4</Version>
     </PackageReference>
     <PackageReference Include="xunit">
       <Version>2.9.2</Version>