diff --git a/LICENSE b/LICENSE
index e414502..9d7ac57 100755
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (C) 2011 - 2023 Tony Wang
+Copyright (C) 2011 - 2024 Tony Wang
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
diff --git a/README.md b/README.md
index d6d46f4..bc8a531 100755
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 |_|_|_| |_|     |_____|__|__|_____|_____|_____|
 ~~~~~~~~~~
 
-**Copyright (C) 2011 - 2023 Tony Wang**
+**Copyright (C) 2011 - 2024 Tony Wang**
 
 [![Build status](https://github.com/paladin-t/my_basic/actions/workflows/c.yml/badge.svg)](https://github.com/paladin-t/my_basic/actions/workflows/c.yml)
 [![MIT license](http://img.shields.io/badge/license-MIT-brightgreen.svg)](http://opensource.org/licenses/MIT)
diff --git a/core/my_basic.c b/core/my_basic.c
index 266d0e1..7855f6a 100755
--- a/core/my_basic.c
+++ b/core/my_basic.c
@@ -3,7 +3,7 @@
 **
 ** For the latest info, see https://github.com/paladin-t/my_basic/
 **
-** Copyright (C) 2011 - 2023 Tony Wang
+** Copyright (C) 2011 - 2024 Tony Wang
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a copy of
 ** this software and associated documentation files (the "Software"), to deal in
diff --git a/core/my_basic.h b/core/my_basic.h
index 5b59f06..2fac880 100755
--- a/core/my_basic.h
+++ b/core/my_basic.h
@@ -3,7 +3,7 @@
 **
 ** For the latest info, see https://github.com/paladin-t/my_basic/
 **
-** Copyright (C) 2011 - 2023 Tony Wang
+** Copyright (C) 2011 - 2024 Tony Wang
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a copy of
 ** this software and associated documentation files (the "Software"), to deal in
diff --git a/shell/main.c b/shell/main.c
index 05093e1..9cabce3 100755
--- a/shell/main.c
+++ b/shell/main.c
@@ -3,7 +3,7 @@
 **
 ** For the latest info, see https://github.com/paladin-t/my_basic/
 **
-** Copyright (C) 2011 - 2023 Tony Wang
+** Copyright (C) 2011 - 2024 Tony Wang
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a copy of
 ** this software and associated documentation files (the "Software"), to deal in