diff --git a/DummyServer/DummyServer.csproj b/DummyServer/DummyServer.csproj
index e898ea1b..0be68ef1 100644
--- a/DummyServer/DummyServer.csproj
+++ b/DummyServer/DummyServer.csproj
@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="5.0.11" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.11" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup>