Logging Debug and Trace Events with Serilog

I'm still learning .NET and .NET Core, and I'm struggling a little bit with logging. So I was hoping someone can point me down the right path....

I'm implementing Serilog in my .NET Core 2.0.0 web application, and the basics seem to be working. However, I can't seem to output "LogDebug" and "LogTrace" to my Serilog rolling file. All I can get are Information events and higher. Are we able to output these 2 types of events?

For testing, within ConfigureServices in Startup.cs I have this:

    Log.Logger = new LoggerConfiguration()
        .MinimumLevel.Verbose()
        .WriteTo.RollingFile("Logs\\test.txt")
        .CreateLogger();

In my controller I have this:

private readonly ILogger<HomeController> _logger;

public HomeController(ILogger<HomeController> logger)
{
    _logger = logger;
}

public IActionResult MyActionForTesting()
{
    _logger.LogDebug("Debug TEST");
    _logger.LogInformation("Information TEST");
    _logger.LogWarning("Warning TEST");
    _logger.LogError("Error TEST");
    _logger.LogTrace("Trace TEST");
    _logger.LogCritical("Critical/Fatal TEST");
}

But my test log file only has this:

2017-10-05 11:19:26.000 -05:00 [Information] Information TEST
2017-10-05 11:19:26.003 -05:00 [Warning] Warning TEST
2017-10-05 11:19:26.006 -05:00 [Error] Error TEST
2017-10-05 11:19:26.009 -05:00 [Fatal] Critical/Fatal TEST

What do I need to do to log the other 2 event types in case I ever need that information?

Thanks!