diff --git a/sideline-racket.el b/sideline-racket.el
index d331f55..9cf4a3f 100644
--- a/sideline-racket.el
+++ b/sideline-racket.el
@@ -1,6 +1,6 @@
 ;;; sideline-racket.el --- Show racket result with sideline  -*- lexical-binding: t; -*-
 
-;; Copyright (C) 2024  Shen, Jen-Chieh
+;; Copyright (C) 2024-2025  Shen, Jen-Chieh
 
 ;; Author: Shen, Jen-Chieh <jcs090218@gmail.com>
 ;; Maintainer: Shen, Jen-Chieh <jcs090218@gmail.com>