diff --git a/index.d.ts b/index.d.ts
index 27ed4904..278194c3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -115,6 +115,7 @@ export default class ReactPlayer extends React.Component<ReactPlayerProps, any>
   static removeCustomPlayers(): void;
   seekTo(amount: number, type?: 'seconds' | 'fraction'): void;
   getCurrentTime(): number;
+  getSecondsLoaded(): number;
   getDuration(): number;
   getInternalPlayer(key?: string): Object;
   showPreview(): void;