Raise copyright years

diff --git a/dmon.pl b/dmon.pl
index 36981c58108191388d6c7cec452ecfdcb7d2b710..a63843a69f6ebadcd8cd25fd0a92eb9b9c3abd02 100755 (executable)
--- a/dmon.pl
+++ b/dmon.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl
 # dmon -- DTrace-backed IP network real-time monitoring utility
-# Copyright (C) 2022 Sergey Matveev <stargrave@stargrave.org>
+# Copyright (C) 2022-2023 Sergey Matveev <stargrave@stargrave.org>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by