diff --git a/components/CanvasLayout/src/CanvasLayout.cs b/components/CanvasLayout/src/CanvasLayout.cs
index ea8b85138..a6ac2264a 100644
--- a/components/CanvasLayout/src/CanvasLayout.cs
+++ b/components/CanvasLayout/src/CanvasLayout.cs
@@ -4,7 +4,7 @@
 
 namespace CommunityToolkit.Labs.WinUI;
 
-public class CanvasLayout : MUXC.VirtualizingLayout
+public partial class CanvasLayout : MUXC.VirtualizingLayout
 {
 #region Setup / teardown
     protected override void InitializeForContextCore(MUXC.VirtualizingLayoutContext context)
diff --git a/components/RivePlayer/src/StateMachineInputCollection.cs b/components/RivePlayer/src/StateMachineInputCollection.cs
index 5b5091159..bbd93c229 100644
--- a/components/RivePlayer/src/StateMachineInputCollection.cs
+++ b/components/RivePlayer/src/StateMachineInputCollection.cs
@@ -15,7 +15,7 @@ namespace CommunityToolkit.Labs.WinUI.Rive;
 ///   </rive:RivePlayer>
 ///
 /// </summary>
-public class StateMachineInputCollection : DependencyObjectCollection
+public partial class StateMachineInputCollection : DependencyObjectCollection
 {
     private WeakReference<RivePlayer> _rivePlayer = new WeakReference<RivePlayer>(null!);