diff --git a/moment-timezone/moment-timezone.d.ts b/moment-timezone/moment-timezone.d.ts
index 407f99d5d..5d7d24bf7 100644
--- a/moment-timezone/moment-timezone.d.ts
+++ b/moment-timezone/moment-timezone.d.ts
@@ -9,6 +9,8 @@ declare module moment {
     interface Moment {
         tz(): string;
         tz(timezone: string): Moment;
+         zoneAbbr() :Moment;
+        zoneName() :Moment;
     }
 
     interface MomentStatic {