diff --git a/Assets/UniRx.Async/CompilerServices/AsyncMethodBuilderAttribute.cs b/Assets/UniRx.Async/CompilerServices/AsyncMethodBuilderAttribute.cs
index 06528cf..de7da41 100644
--- a/Assets/UniRx.Async/CompilerServices/AsyncMethodBuilderAttribute.cs
+++ b/Assets/UniRx.Async/CompilerServices/AsyncMethodBuilderAttribute.cs
@@ -1,6 +1,7 @@
 #if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
 
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+#pragma warning disable CS0436
 
 namespace System.Runtime.CompilerServices
 {
diff --git a/Assets/UniRx.Async/UniTask.cs b/Assets/UniRx.Async/UniTask.cs
index 25c533d..7b80b45 100644
--- a/Assets/UniRx.Async/UniTask.cs
+++ b/Assets/UniRx.Async/UniTask.cs
@@ -1,5 +1,6 @@
 #if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+#pragma warning disable CS0436
 
 using System;
 using System.Collections.Generic;
diff --git a/Assets/UniRx.Async/UniTaskVoid.cs b/Assets/UniRx.Async/UniTaskVoid.cs
index 929ac6f..550a55b 100644
--- a/Assets/UniRx.Async/UniTaskVoid.cs
+++ b/Assets/UniRx.Async/UniTaskVoid.cs
@@ -1,5 +1,6 @@
 #if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
 #pragma warning disable CS1591
+#pragma warning disable CS0436
 
 using System;
 using System.Diagnostics;