diff --git a/Toolkit.Foundation/Observable.cs b/Toolkit.Foundation/Observable.cs
index e6a044e..8ef169e 100644
--- a/Toolkit.Foundation/Observable.cs
+++ b/Toolkit.Foundation/Observable.cs
@@ -130,7 +130,7 @@ public partial class Observable<TValue> :
     {
     }
 
-    private partial void OnValueChanged(TValue? value) => OnValueChanged();
+    partial void OnValueChanged(TValue? value) => OnValueChanged();
 }
 
 public partial class Observable<TKey, TValue> :
@@ -160,5 +160,5 @@ public partial class Observable<TKey, TValue> :
     {
     }
 
-    private partial void OnValueChanged(TValue? value) => OnValueChanged();
+    partial void OnValueChanged(TValue? value) => OnValueChanged();
 }
\ No newline at end of file
diff --git a/Toolkit.Foundation/ObservableCollection.cs b/Toolkit.Foundation/ObservableCollection.cs
index 2017183..81d8977 100644
--- a/Toolkit.Foundation/ObservableCollection.cs
+++ b/Toolkit.Foundation/ObservableCollection.cs
@@ -721,7 +721,7 @@ public partial class ObservableCollection<TItem> :
         CollectionChanged?.Invoke(this, args);
     }
 
-    private partial void OnIsActivatedChanged(bool value)
+    partial void OnIsActivatedChanged(bool value)
     {
         if (value)
         {
@@ -733,7 +733,7 @@ public partial class ObservableCollection<TItem> :
         }
     }
 
-    private partial void OnSelectedItemChanged(TItem? oldValue, TItem? newValue)
+    partial void OnSelectedItemChanged(TItem? oldValue, TItem? newValue)
     {
         if (oldValue is ISelectable oldSelection)
         {
@@ -786,7 +786,7 @@ public partial class ObservableCollection<TValue, TViewModel>(IServiceProvider p
     {
     }
 
-    private partial void OnValueChanged(TValue value) => OnValueChanged();
+    partial void OnValueChanged(TValue value) => OnValueChanged();
 }
 
 public partial class ObservableCollection<TViewModel, TKey, TValue> :
@@ -831,7 +831,7 @@ public partial class ObservableCollection<TViewModel, TKey, TValue> :
     {
     }
 
-    private partial void OnValueChanged(TValue value) => OnValueChanged();
+    partial void OnValueChanged(TValue value) => OnValueChanged();
 }
 
 public class ObservableCollection :
diff --git a/Toolkit.Foundation/ValueViewModel.cs b/Toolkit.Foundation/ValueViewModel.cs
index 25a3102..3f39cfa 100644
--- a/Toolkit.Foundation/ValueViewModel.cs
+++ b/Toolkit.Foundation/ValueViewModel.cs
@@ -17,5 +17,5 @@ public partial class ValueViewModel<TValue>(IServiceProvider provider,
     {
     }
 
-    private partial void OnValueChanged(TValue? value) => OnChanged(value);
+    partial void OnValueChanged(TValue? value) => OnChanged(value);
 }
\ No newline at end of file