diff --git a/public/index.js b/public/index.js
index f2409a1..fb4d882 100644
--- a/public/index.js
+++ b/public/index.js
@@ -291,4 +291,8 @@ $(document).ready(function() {
     $editor.on('scroll', () => {
         $lineNumbers.scrollTop($editor.scrollTop());
     });
+
+    $viewer.on('scroll', () => {
+        $lineNumbers.scrollTop($viewer.scrollTop());
+    });
 });
\ No newline at end of file