diff --git a/tests/WebApiContrib.Core.MessagePack.Tests/WebApiContrib.Core.MessagePack.Tests.csproj b/tests/WebApiContrib.Core.MessagePack.Tests/WebApiContrib.Core.MessagePack.Tests.csproj
index f885eaf..1391df7 100644
--- a/tests/WebApiContrib.Core.MessagePack.Tests/WebApiContrib.Core.MessagePack.Tests.csproj
+++ b/tests/WebApiContrib.Core.MessagePack.Tests/WebApiContrib.Core.MessagePack.Tests.csproj
@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="MessagePack" Version="1.7.3.4" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.6" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.22" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="2.1.3" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="2.1.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />