diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
index 7bfefbf..e391d19 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/Channel.cs
@@ -193,6 +193,8 @@ namespace Cysharp.Threading.Tasks
             public SingleConsumerUnboundedChannelReader(SingleConsumerUnboundedChannel<T> parent)
             {
                 this.parent = parent;
+
+                TaskTracker.TrackActiveTask(this, 4);
             }
 
             public override UniTask Completion
@@ -304,6 +306,7 @@ namespace Cysharp.Threading.Tasks
 
             public void SingalCancellation(CancellationToken cancellationToken)
             {
+                TaskTracker.RemoveTracking(this);
                 core.TrySetCanceled(cancellationToken);
             }
 
@@ -311,10 +314,12 @@ namespace Cysharp.Threading.Tasks
             {
                 if (error != null)
                 {
+                    TaskTracker.RemoveTracking(this);
                     core.TrySetException(error);
                 }
                 else
                 {
+                    TaskTracker.RemoveTracking(this);
                     core.TrySetResult(false);
                 }
             }
diff --git a/src/UniTask/Assets/Scenes/SandboxMain.cs b/src/UniTask/Assets/Scenes/SandboxMain.cs
index dc42d22..6e7a906 100644
--- a/src/UniTask/Assets/Scenes/SandboxMain.cs
+++ b/src/UniTask/Assets/Scenes/SandboxMain.cs
@@ -1,20 +1,16 @@
-using System;
-
+using Cysharp.Threading.Tasks;
 using Cysharp.Threading.Tasks.Linq;
 using Cysharp.Threading.Tasks.Triggers;
+using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.IO;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using Cysharp.Threading.Tasks;
 using Unity.Collections;
 using Unity.Jobs;
 using UnityEngine;
-using UnityEngine.Networking;
 using UnityEngine.UI;
-using TMPro;
 
 public struct MyJob : IJob
 {
@@ -194,7 +190,7 @@ public class SandboxMain : MonoBehaviour
         Debug.Log("Done");
     }
 
-    async void Start()
+    async UniTaskVoid Start()
     {
         //var rp = new AsyncReactiveProperty<int>(10);
 
@@ -203,13 +199,12 @@ public class SandboxMain : MonoBehaviour
         //await UniTaskAsyncEnumerable.EveryUpdate().Take(10).ForEachAsync((x, i) => rp.Value = i);
 
         //rp.Dispose();
-        var cts = new CancellationTokenSource();
-        Running(cts.Token).Forget();
 
+        var channel = Channel.CreateSingleConsumerUnbounded<int>();
+        Debug.Log("wait channel");
+        await channel.Reader.ReadAllAsync(this.GetCancellationTokenOnDestroy()).ForEachAsync(_ => { });
 
 
-        cts.CancelAfterSlim(TimeSpan.FromSeconds(3));
-
     }
 
     async UniTaskVoid Running(CancellationToken ct)