diff --git a/src/global.d.ts b/src/global.d.ts
index 9e6c1dbd..8934084e 100644
--- a/src/global.d.ts
+++ b/src/global.d.ts
@@ -1 +1,7 @@
 import 'jest-extended';
+
+declare module 'video.js' {
+    export interface VideoJsPlayer {
+        hlsQualitySelector(options?: any): void;
+    }
+}