diff --git a/LICENSE b/LICENSE
index ff2679a..18e4ba7 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Zhitao Cai
+Copyright (c) 2020 Zhitao Cai
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index b4edaea..cfb9a45 100755
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@
 
     MIT License
 
-    Copyright (c) 2019 Zhitao Cai
+    Copyright (c) 2020 Zhitao Cai
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal