IWebHostBuilder doesn't contain definition for UseNLog()

I’m using the latest version of Nlog.Web.AspNetcore (4.5.0-rc3) but can’t use the UseNLog method.

As a workaround I had to update my Startup.cs with the following to add NLog to the configuration:

public void Configure(IApplicationBuilder app, 
    IHostingEnvironment env,
    ILoggerFactory loggerFactory)
{
    ...

    loggerFactory.AddNLog();
    app.AddNLogWeb();

    ...
}

And in my Program.cs

public static IWebHost BuildWebHost(string[] args) =>
    WebHost.CreateDefaultBuilder(args)
        .UseStartup<Startup>()            
        .ConfigureLogging((host, logging) =>
        {
            // Clear providers so logs don't get written to console
            logging.ClearProviders();
            host.HostingEnvironment.ConfigureNLog("nlog.config");
        })
        .Build();

This gets everything working but I’m getting an obsolete warning

Startup.cs(38,13): warning CS0618: 'AspNetExtensions.AddNLogWeb(IApplicationBuilder)' is obsolete: 
'Use UseNLog() on IWebHostBuilder'

Is there something I’m missing here?