diff --git a/lib/Botkit.d.ts b/lib/Botkit.d.ts
index f4525225e..1939ed2ce 100644
--- a/lib/Botkit.d.ts
+++ b/lib/Botkit.d.ts
@@ -154,6 +154,7 @@ declare namespace botkit {
     setVar(field: string, value: any): void;
     silentRepeat(): void;
     stop(status?: ConversationStatusType): void;
+    successful(): boolean;
     transitionTo(thread: string, message: string | M): void;
   }
   interface ConversationCaptureOptions {