diff --git a/lib/media/segment_index.js b/lib/media/segment_index.js
index 597d696667..ec9298b350 100644
--- a/lib/media/segment_index.js
+++ b/lib/media/segment_index.js
@@ -694,6 +694,16 @@ shaka.media.MetaSegmentIndex = class extends shaka.media.SegmentIndex {
     this.indexes_ = [];
   }
 
+  /**
+   * @override
+   * @export
+   */
+  forEachTopLevelReference(fn) {
+    for (const index of this.indexes_) {
+      index.forEachTopLevelReference(fn);
+    }
+  }
+
   /**
    * @override
    * @export