diff --git a/etc/web-streams-polyfill.api.md b/etc/web-streams-polyfill.api.md
index 84a43a7..44563e1 100644
--- a/etc/web-streams-polyfill.api.md
+++ b/etc/web-streams-polyfill.api.md
@@ -76,7 +76,7 @@ export class ReadableStream<R = any> implements AsyncIterable<R> {
 }
 
 // @public
-export interface ReadableStreamAsyncIterator<R> extends AsyncIterator<R> {
+export interface ReadableStreamAsyncIterator<R> extends AsyncIterableIterator<R> {
     // (undocumented)
     next(): Promise<IteratorResult<R, undefined>>;
     // (undocumented)
diff --git a/src/lib/readable-stream/async-iterator.ts b/src/lib/readable-stream/async-iterator.ts
index d621deb..b7abf8d 100644
--- a/src/lib/readable-stream/async-iterator.ts
+++ b/src/lib/readable-stream/async-iterator.ts
@@ -25,7 +25,7 @@ import {
  *
  * @public
  */
-export interface ReadableStreamAsyncIterator<R> extends AsyncIterator<R> {
+export interface ReadableStreamAsyncIterator<R> extends AsyncIterableIterator<R> {
   next(): Promise<IteratorResult<R, undefined>>;
 
   return(value?: any): Promise<IteratorResult<any>>;