diff --git a/LICENSE.md b/LICENSE.md
index 56f404c..259e3d6 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2017-2021 Yihui Xie
+Copyright (c) 2017-2022 Yihui Xie
 
 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