diff --git a/src/ObservableCollections/IObservableCollection.cs b/src/ObservableCollections/IObservableCollection.cs
index 474bb8e..eab69ff 100644
--- a/src/ObservableCollections/IObservableCollection.cs
+++ b/src/ObservableCollections/IObservableCollection.cs
@@ -59,6 +59,7 @@ namespace ObservableCollections
 
     public interface INotifyCollectionChangedSynchronizedView<out TView> : IReadOnlyCollection<TView>, INotifyCollectionChanged, INotifyPropertyChanged, IDisposable
     {
+        void Refresh();
     }
 
     public static class ObservableCollectionsExtensions
diff --git a/src/ObservableCollections/Internal/NotifyCollectionChangedSynchronizedView.cs b/src/ObservableCollections/Internal/NotifyCollectionChangedSynchronizedView.cs
index d28aea7..38b8e3e 100644
--- a/src/ObservableCollections/Internal/NotifyCollectionChangedSynchronizedView.cs
+++ b/src/ObservableCollections/Internal/NotifyCollectionChangedSynchronizedView.cs
@@ -131,6 +131,11 @@ namespace ObservableCollections.Internal
                 self.PropertyChanged?.Invoke(self, CountPropertyChangedEventArgs);
             }
         }
+
+        public void Refresh()
+        {
+            OnCollectionChanged(new SynchronizedViewChangedEventArgs<T, TView>(NotifyCollectionChangedAction.Reset));
+        }
     }
 
     internal class ListNotifyCollectionChangedSynchronizedView<T, TView>