update copyright years

1 files changed, 1 insertions, 1 deletions

diff --git a/gmid.h b/gmid.h
index 5432801..1c9b061 100644
--- a/gmid.h
+++ b/gmid.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 Omar Polo <op@omarpolo.com>
+ * Copyright (c) 2020, 2021, 2022 Omar Polo <op@omarpolo.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above