diff --git a/moment/moment-node.d.ts b/moment/moment-node.d.ts
index b109893a3c..3be1ceab51 100644
--- a/moment/moment-node.d.ts
+++ b/moment/moment-node.d.ts
@@ -246,6 +246,7 @@ declare module moment {
 
         from(f: Moment|string|number|Date|number[], suffix?: boolean): string;
         to(f: Moment|string|number|Date|number[], suffix?: boolean): string;
+        toNow(withoutPrefix?: boolean): string;
 
         diff(b: Moment): number;
         diff(b: Moment, unitOfTime: string): number;