diff --git a/README.md b/README.md
index c69e780..e0dca51 100644
--- a/README.md
+++ b/README.md
@@ -70,12 +70,12 @@ builder.Services.MapQueue<BusinessService, BusinessCommandOrEvent>(config => con
 
 ```
 
-#### Scoped and Keyed Services, Same Type, Multiple Consumers
+#### Scoped and Keyed Services, Same Type, Multiple Consumers, Using NewtonsoftAMQPSerializer
 ```cs
 builder.Services.AddKeyedScoped<BusinessService>("key-of-service-1");
 builder.Services.AddKeyedScoped("key-of-service-2", (sp, key) => new BusinessService(... custom dependencies ...));
 
-builder.Services.AddSingleton<IAMQPSerializer, SystemTextJsonAMQPSerializer>();
+builder.Services.AddSingleton<IAMQPSerializer, NewtonsoftAMQPSerializer>();
 
 builder.Services.MapQueue<BusinessService, BusinessCommandOrEvent>(config => config
     .WithDispatchInChildScope()