diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs
index e8dfb5f..60f246d 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs
@@ -22,6 +22,22 @@ namespace Cysharp.Threading.Tasks.Linq
             return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAsync(source, action, cancellationToken);
         }
 
+        /// <summary>Obsolete(Error), Use Use ForEachAwaitAsync instead.</summary>
+        [Obsolete("Use ForEachAwaitAsync instead.", true)]
+        [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+        public static UniTask ForEachAsync<T>(this IUniTaskAsyncEnumerable<T> source, Func<T, UniTask> action, CancellationToken cancellationToken = default)
+        {
+            throw new NotSupportedException("Use ForEachAwaitAsync instead.");
+        }
+
+        /// <summary>Obsolete(Error), Use Use ForEachAwaitAsync instead.</summary>
+        [Obsolete("Use ForEachAwaitAsync instead.", true)]
+        [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+        public static UniTask ForEachAsync<T>(this IUniTaskAsyncEnumerable<T> source, Func<T, int, UniTask> action, CancellationToken cancellationToken = default)
+        {
+            throw new NotSupportedException("Use ForEachAwaitAsync instead.");
+        }
+
         public static UniTask ForEachAwaitAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTask> action, CancellationToken cancellationToken = default)
         {
             Error.ThrowArgumentNullException(source, nameof(source));