diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/UnityWebRequestException.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/UnityWebRequestException.cs
index 9a164ab..2386a74 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/UnityWebRequestException.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/UnityWebRequestException.cs
@@ -1,6 +1,7 @@
 #if ENABLE_UNITYWEBREQUEST
 
 using System;
+using System.Collections.Generic;
 using UnityEngine.Networking;
 
 namespace Cysharp.Threading.Tasks
@@ -17,6 +18,7 @@ namespace Cysharp.Threading.Tasks
         public string Error { get; }
         public string Text { get; }
         public long ResponseCode { get; }
+        public Dictionary<string, string> ResponseHeaders { get; }
 
         string msg;
 
@@ -38,6 +40,7 @@ namespace Cysharp.Threading.Tasks
                     this.Text = dhb.text;
                 }
             }
+            this.ResponseHeaders = unityWebRequest.GetResponseHeaders();
         }
 
         public override string Message
diff --git a/src/UniTask/Assets/Scenes/SandboxMain.cs b/src/UniTask/Assets/Scenes/SandboxMain.cs
index 0db724d..1d9c8d0 100644
--- a/src/UniTask/Assets/Scenes/SandboxMain.cs
+++ b/src/UniTask/Assets/Scenes/SandboxMain.cs
@@ -577,8 +577,8 @@ public class SandboxMain : MonoBehaviour
             StartCoroutine(LastYieldCore());
 
             Debug.Log("BEFORE:" + Time.frameCount);
-
-            await UniTask.Yield(PlayerLoopTiming.LastTimeUpdate);
+            
+            // await UniTask.Yield(PlayerLoopTiming.LastTimeUpdate);
 
             Debug.Log("AFTER:" + Time.frameCount);
         }));