diff --git a/types/twit/index.d.ts b/types/twit/index.d.ts
index 778a112ee3..33f1fdb50f 100644
--- a/types/twit/index.d.ts
+++ b/types/twit/index.d.ts
@@ -275,6 +275,7 @@ declare module 'twit' {
       url?: string,
       include_user_entities?: boolean,
       stringify_ids?: boolean,
+      in_reply_to_status_id?: number | string,
     }
     export interface PromiseResponse {
       data: Response,