diff --git a/src/internals/esque.ts b/src/internals/esque.ts
index b71c9a5..32ac843 100644
--- a/src/internals/esque.ts
+++ b/src/internals/esque.ts
@@ -18,5 +18,5 @@ export interface WebReadableStreamEsque {
  * @see NodeJS.ReadableStream from @types/node
  */
 export interface NodeJSReadableStreamEsque {
-	[Symbol.asyncIterator]: () => AsyncIterableIterator<Buffer | string>;
+	[Symbol.asyncIterator]: () => AsyncIterableIterator<unknown>;
 }