diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/CancellationTokenExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/CancellationTokenExtensions.cs
index 3f3a532..3da47c1 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/CancellationTokenExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/CancellationTokenExtensions.cs
@@ -67,13 +67,13 @@ namespace Cysharp.Threading.Tasks
                 return (UniTask.FromCanceled(cancellationToken), default(CancellationTokenRegistration));
             }
 
-            var promise = new UniTaskCompletionSource();
+            var promise = AutoResetUniTaskCompletionSource.Create();
             return (promise.Task, cancellationToken.RegisterWithoutCaptureExecutionContext(cancellationTokenCallback, promise));
         }
 
         static void Callback(object state)
         {
-            var promise = (UniTaskCompletionSource)state;
+            var promise = (AutoResetUniTaskCompletionSource)state;
             promise.TrySetResult();
         }
 
diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
index 5a484fd..196ebdd 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
@@ -91,7 +91,7 @@ namespace Cysharp.Threading.Tasks
     {
         readonly Queue<T> items;
         readonly SingleConsumerUnboundedChannelReader readerSource;
-        UniTaskCompletionSource completedTaskSource;
+        AutoResetUniTaskCompletionSource completedTaskSource;
         UniTask completedTask;
 
         Exception completionError;
@@ -208,7 +208,7 @@ namespace Cysharp.Threading.Tasks
                         return parent.completedTask;
                     }
 
-                    parent.completedTaskSource = new UniTaskCompletionSource();
+                    parent.completedTaskSource = AutoResetUniTaskCompletionSource.Create();
                     return parent.completedTaskSource.Task;
                 }
             }
diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Never.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Never.cs
index 2dbce71..ca3925b 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Never.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Never.cs
@@ -36,11 +36,11 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask<bool> MoveNextAsync()
             {
-                var tcs = new UniTaskCompletionSource<bool>();
+                var tcs = AutoResetUniTaskCompletionSource<bool>.Create();
 
                 cancellationToken.Register(state =>
                 {
-                    var task = (UniTaskCompletionSource<bool>)state;
+                    var task = (AutoResetUniTaskCompletionSource<bool>)state;
                     task.TrySetCanceled(cancellationToken);
                 }, tcs);
 
diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/Triggers/AsyncTriggerExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/Triggers/AsyncTriggerExtensions.cs
index bad5a04..2411b36 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/Triggers/AsyncTriggerExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/Triggers/AsyncTriggerExtensions.cs
@@ -18,13 +18,13 @@ namespace Cysharp.Threading.Tasks
 
 #endif
 
-        /// <summary>This CancellationToken is canceled when the MonoBehaviour will be destroyed.</summary>
+        /// <summary>This CancellationToken is canceled when the GameObject will be destroyed.</summary>
         public static CancellationToken GetCancellationTokenOnDestroy(this GameObject gameObject)
         {
             return gameObject.GetAsyncDestroyTrigger().CancellationToken;
         }
 
-        /// <summary>This CancellationToken is canceled when the MonoBehaviour will be destroyed.</summary>
+        /// <summary>This CancellationToken is canceled when the Component will be destroyed.</summary>
         public static CancellationToken GetCancellationTokenOnDestroy(this Component component)
         {
 #if UNITY_2022_2_OR_NEWER
diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs
index 5155567..7ab8543 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs
@@ -16,11 +16,11 @@ namespace Cysharp.Threading.Tasks
         /// </summary>
         public static UniTask<T> AsUniTask<T>(this Task<T> task, bool useCurrentSynchronizationContext = true)
         {
-            var promise = new UniTaskCompletionSource<T>();
+            var promise = AutoResetUniTaskCompletionSource<T>.Create();
 
             task.ContinueWith((x, state) =>
             {
-                var p = (UniTaskCompletionSource<T>)state;
+                var p = (AutoResetUniTaskCompletionSource<T>)state;
 
                 switch (x.Status)
                 {
@@ -46,11 +46,11 @@ namespace Cysharp.Threading.Tasks
         /// </summary>
         public static UniTask AsUniTask(this Task task, bool useCurrentSynchronizationContext = true)
         {
-            var promise = new UniTaskCompletionSource();
+            var promise = AutoResetUniTaskCompletionSource.Create();
 
             task.ContinueWith((x, state) =>
             {
-                var p = (UniTaskCompletionSource)state;
+                var p = (AutoResetUniTaskCompletionSource)state;
 
                 switch (x.Status)
                 {
diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
index d2bd961..bea0621 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
@@ -11,7 +11,7 @@ namespace Cysharp.Threading.Tasks
     {
         public static UniTask<T> ToUniTask<T>(this IObservable<T> source, bool useFirstValue = false, CancellationToken cancellationToken = default)
         {
-            var promise = new UniTaskCompletionSource<T>();
+            var promise = AutoResetUniTaskCompletionSource<T>.Create();
             var disposable = new SingleAssignmentDisposable();
 
             var observer = useFirstValue
@@ -109,7 +109,7 @@ namespace Cysharp.Threading.Tasks
         {
             static readonly Action<object> callback = OnCanceled;
 
-            readonly UniTaskCompletionSource<T> promise;
+            readonly IPromise<T> promise;
             readonly SingleAssignmentDisposable disposable;
             readonly CancellationToken cancellationToken;
             readonly CancellationTokenRegistration registration;
@@ -117,7 +117,7 @@ namespace Cysharp.Threading.Tasks
             bool hasValue;
             T latestValue;
 
-            public ToUniTaskObserver(UniTaskCompletionSource<T> promise, SingleAssignmentDisposable disposable, CancellationToken cancellationToken)
+            public ToUniTaskObserver(IPromise<T> promise, SingleAssignmentDisposable disposable, CancellationToken cancellationToken)
             {
                 this.promise = promise;
                 this.disposable = disposable;
@@ -180,14 +180,14 @@ namespace Cysharp.Threading.Tasks
         {
             static readonly Action<object> callback = OnCanceled;
 
-            readonly UniTaskCompletionSource<T> promise;
+            readonly IPromise<T> promise;
             readonly SingleAssignmentDisposable disposable;
             readonly CancellationToken cancellationToken;
             readonly CancellationTokenRegistration registration;
 
             bool hasValue;
 
-            public FirstValueToUniTaskObserver(UniTaskCompletionSource<T> promise, SingleAssignmentDisposable disposable, CancellationToken cancellationToken)
+            public FirstValueToUniTaskObserver(IPromise<T> promise, SingleAssignmentDisposable disposable, CancellationToken cancellationToken)
             {
                 this.promise = promise;
                 this.disposable = disposable;