diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/External/DOTween/DOTweenAsyncExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/External/DOTween/DOTweenAsyncExtensions.cs
index 076bed5..ba78367 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/External/DOTween/DOTweenAsyncExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/External/DOTween/DOTweenAsyncExtensions.cs
@@ -148,6 +148,7 @@ namespace Cysharp.Threading.Tasks
             Tween tween;
             TweenCancelBehaviour cancelBehaviour;
             CancellationToken cancellationToken;
+            CancellationTokenRegistration cancellationRegistration;
             CallbackType callbackType;
             bool canceled;
 
@@ -207,7 +208,7 @@ namespace Cysharp.Threading.Tasks
                     default:
                         break;
                 }
-                
+
                 if (result.originalCompleteAction == result.onCompleteCallbackDelegate)
                 {
                     result.originalCompleteAction = null;
@@ -215,7 +216,7 @@ namespace Cysharp.Threading.Tasks
 
                 if (cancellationToken.CanBeCanceled)
                 {
-                    cancellationToken.RegisterWithoutCaptureExecutionContext(x =>
+                    result.cancellationRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(x =>
                     {
                         var source = (TweenConfiguredSource)x;
                         switch (source.cancelBehaviour)
@@ -250,30 +251,7 @@ namespace Cysharp.Threading.Tasks
                                 source.tween.Complete(true);
                                 break;
                             case TweenCancelBehaviour.CancelAwait:
-                                // restore to original callback
-                                switch (callbackType)
-                                {
-                                    case CallbackType.Kill:
-                                        tween.onKill = source.originalCompleteAction;
-                                        break;
-                                    case CallbackType.Complete:
-                                        tween.onComplete = source.originalCompleteAction;
-                                        break;
-                                    case CallbackType.Pause:
-                                        tween.onPause = source.originalCompleteAction;
-                                        break;
-                                    case CallbackType.Play:
-                                        tween.onPlay = source.originalCompleteAction;
-                                        break;
-                                    case CallbackType.Rewind:
-                                        tween.onRewind = source.originalCompleteAction;
-                                        break;
-                                    case CallbackType.StepComplete:
-                                        tween.onStepComplete = source.originalCompleteAction;
-                                        break;
-                                    default:
-                                        break;
-                                }
+                                source.RestoreOriginalCallback();
                                 source.core.TrySetCanceled(source.cancellationToken);
                                 break;
                         }
@@ -376,7 +354,18 @@ namespace Cysharp.Threading.Tasks
             {
                 TaskTracker.RemoveTracking(this);
                 core.Reset();
+                cancellationRegistration.Dispose();
 
+                RestoreOriginalCallback();
+
+                tween = default;
+                cancellationToken = default;
+                originalCompleteAction = default;
+                return pool.TryPush(this);
+            }
+
+            void RestoreOriginalCallback()
+            {
                 switch (callbackType)
                 {
                     case CallbackType.Kill:
@@ -400,11 +389,6 @@ namespace Cysharp.Threading.Tasks
                     default:
                         break;
                 }
-
-                tween = default;
-                cancellationToken = default;
-                originalCompleteAction = default;
-                return pool.TryPush(this);
             }
         }
     }