diff --git a/types/globals.d.ts b/types/globals.d.ts
index 63c9be6..c894c2e 100644
--- a/types/globals.d.ts
+++ b/types/globals.d.ts
@@ -324,9 +324,9 @@ declare function implementationOf<TParams extends unknown[]>(...interfaces: [...
 
 declare type AsyncFunction<T = any> = (...args: any[]) => Promise<T>;
 
-interface AsyncGenerator<T = unknown, TReturn = any, TNext = unknown> extends AsyncIterator<T, TReturn, TNext> {
+interface AsyncGenerator<T = unknown, TReturn = any, TNext = any> extends AsyncIteratorObject<T, TReturn, TNext> {
     // NOTE: 'next' is defined using a tuple to ensure we report the correct assignability errors in all places.
-    next(...args: [] | [TNext]): Promise<IteratorResult<T, TReturn>>;
+    next(...[value]: [] | [TNext]): Promise<IteratorResult<T, TReturn>>;
     return(value: TReturn | PromiseLike<TReturn>): Promise<IteratorResult<T, TReturn>>;
     throw(e: any): Promise<IteratorResult<T, TReturn>>;
     [Symbol.asyncIterator](): AsyncGenerator<T, TReturn, TNext>;
diff --git a/types/util/StreamBuffer.d.ts b/types/util/StreamBuffer.d.ts
index 79e76b3..53f425d 100644
--- a/types/util/StreamBuffer.d.ts
+++ b/types/util/StreamBuffer.d.ts
@@ -19,7 +19,7 @@ declare namespace __jymfony {
         unpipe(destination?: NodeJS.WritableStream): this;
         unshift(chunk: string | Uint8Array, encoding?: BufferEncoding): void;
         wrap(oldStream: NodeJS.ReadableStream): this;
-        [Symbol.asyncIterator](): AsyncIterableIterator<string | Buffer>;
+        [Symbol.asyncIterator](): NodeJS.AsyncIterator<string | Buffer>;
 
         write(buffer: string | Buffer, cb?: Function): boolean;
         write(str: string, encoding?: string, cb?: Function): boolean;