diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e9b1407..fe7e515 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2022-2023 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2022-2024 Lin Song <linsongui@gmail.com>
 
 name: build
 
diff --git a/.github/workflows/test_set_1.yml b/.github/workflows/test_set_1.yml
index 7f3a9d8..738adaa 100644
--- a/.github/workflows/test_set_1.yml
+++ b/.github/workflows/test_set_1.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2022-2023 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2022-2024 Lin Song <linsongui@gmail.com>
 
 name: test_set_1
 
diff --git a/.github/workflows/test_set_2.yml b/.github/workflows/test_set_2.yml
index 5e0f427..0b1aad1 100644
--- a/.github/workflows/test_set_2.yml
+++ b/.github/workflows/test_set_2.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2022-2023 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2022-2024 Lin Song <linsongui@gmail.com>
 
 name: test_set_2
 
diff --git a/.github/workflows/test_set_3.yml b/.github/workflows/test_set_3.yml
index ec62952..e30c87e 100644
--- a/.github/workflows/test_set_3.yml
+++ b/.github/workflows/test_set_3.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2022-2023 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2022-2024 Lin Song <linsongui@gmail.com>
 
 name: test_set_3
 
diff --git a/LICENSE.txt b/LICENSE.txt
index 94392be..c73f508 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2022-2023 Lin Song <linsongui@gmail.com>
+Copyright (c) 2022-2024 Lin Song <linsongui@gmail.com>
 Copyright (c) 2013-2023 Nyr
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of