diff --git a/source/index.ts b/source/index.ts
index 3eb8ad6..852d7c5 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -50,6 +50,7 @@ export default class PQueue<QueueType extends Queue<RunFunction, EnqueueOptionsT
 	*/
 	timeout?: number;
 
+	// TODO: The `throwOnTimeout` option should affect the return types of `add()` and `addAll()`
 	constructor(options?: Options<QueueType, EnqueueOptionsType>) {
 		super();