Не подключается MediatR .net

Такой код в сборке с коммандами:

public static class DependencyInjection
    {
        public static IServiceCollection AddApplication(this IServiceCollection services)
        {
            var assembly = typeof(DependencyInjection).Assembly;

            services.AddMediatR(configuration =>
                configuration.RegisterServicesFromAssembly(assembly));

            return services;
        }
    };

Program.cs:

builder.Services
.AddApplication()
.AddInfrastructure();