CarouselView Not Updating After Adding Item to Itemssource

Question

I am attempting to implement a Carousel View in Xamarin.Forms where the user can add items to the carousel by pressing a button. I can initially load some items, but when I try to add another item at run time, the change is not reflected in the app. During debugging, I can confirm that the ObservableCollection that Itemssource is bound to does have an item added to it, but the UI does not reflect that added item.

Here is my ConfigurationView.xaml:

<ContentView xmlns="http://xamarin.com/schemas/2014/forms" 
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:views="clr-namespace:JoyHost_GUI.Views;assembly=JoyHost_GUI"
             x:Class="JoyHost_GUI.Views.ConfigurationView">
    <ContentView.Content>
        <StackLayout>
            <StackLayout Orientation="Horizontal">
                <Label Text="{Binding ConfigName}" />
                <Button Text="+ Add Channel" Command="{Binding AddChannelCommand}" />
            </StackLayout>
            <CarouselView ItemsSource="{Binding Channels}"
                          IndicatorView="indicatorView"
                          IsSwipeEnabled="True"
                          Loop="False"
                          VerticalOptions="StartAndExpand"
                          x:Name="ChannelsCarousel">
                <CarouselView.ItemTemplate>
                    <DataTemplate>
                        <views:ChannelView BindingContext="{Binding .}"/>
                    </DataTemplate>
                </CarouselView.ItemTemplate>
                <CarouselView.ItemsLayout>
                    <LinearItemsLayout Orientation="Horizontal" ItemSpacing="0" SnapPointsType="MandatorySingle" SnapPointsAlignment="Center" />
                </CarouselView.ItemsLayout>
            </CarouselView>
            <IndicatorView x:Name="indicatorView"
                   IndicatorColor="LightGray"
                   SelectedIndicatorColor="Blue"
                   HorizontalOptions="Center"
                           Margin="0,0,0,10"/>
        </StackLayout>
    </ContentView.Content>
</ContentView>

Here is the code-behind:

namespace JoyHost_GUI.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class ConfigurationView : ContentView
    {
        ConfigurationViewModel configurationViewModel;

        public ConfigurationView()
        {
            InitializeComponent();

            configurationViewModel = new ConfigurationViewModel();

            BindingContext = configurationViewModel;
        }
    }
}

And here is the ViewModel:

namespace JoyHost_GUI.ViewModels
{
    public class ConfigurationViewModel : BaseNotifyPropertyChanged
    {
        public ObservableCollection<ChannelModel> Channels { get; }
        public ICommand AddChannelCommand { get; }
        private string _configName;

        public ConfigurationViewModel()
        {
            Channels = new ObservableCollection<ChannelModel>();
            AddChannelCommand = new Command(() =>
            {
                Channels.Add(new ChannelModel());
            });
        }

        public string ConfigName
        {
            get => _configName;
            set
            {
                _configName = value;
                OnPropertyChanged();
            }
        }

        public void AddChannels(IEnumerable channels)
        {
            foreach(ChannelModel channel in channels)
            {
                Channels.Add(channel);
            }
        }
    }
}

In short, after the AddChannelCommand is executed, the underlying Channels structure is updated, but not the GUI of the app.