diff --git a/LICENSE b/LICENSE
index c83eebe..3b0fa9b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Hirrolot
+Copyright (c) 2020-2021 Hirrolot
 
 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/datatype99.h b/datatype99.h
index d730a68..26c4c0c 100644
--- a/datatype99.h
+++ b/datatype99.h
@@ -1,7 +1,7 @@
 /*
 MIT License
 
-Copyright (c) 2020 Hirrolot
+Copyright (c) 2020-2021 Hirrolot
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal