diff --git a/Makefile b/Makefile
index 59b1ee7..e8b2a91 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Copyright 2020 Xavier Del Campo Romero
+# Copyright 2020-2023 Xavier Del Campo Romero
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.