diff --git a/2021/day18/Makefile b/2021/day18/Makefile
index b036de5..c14ec36 100644
--- a/2021/day18/Makefile
+++ b/2021/day18/Makefile
@@ -1,6 +1,6 @@
 # AOC daily Makefile - GNU make only.
 #
-# Copyright (C) 2021 Bruno Raoult ("br")
+# Copyright (C) 2022 Bruno Raoult ("br")
 # Licensed under the GNU General Public License v3.0 or later.
 # Some rights reserved. See COPYING.
 #
diff --git a/2021/day18/aoc-c.c b/2021/day18/aoc-c.c
index c074822..97ad510 100644
--- a/2021/day18/aoc-c.c
+++ b/2021/day18/aoc-c.c
@@ -1,6 +1,6 @@
 /* aoc-c.c: Advent of Code 2021, day 18 parts 1 & 2
  *
- * Copyright (C) 2021 Bruno Raoult ("br")
+ * Copyright (C) 2022 Bruno Raoult ("br")
  * Licensed under the GNU General Public License v3.0 or later.
  * Some rights reserved. See COPYING.
  *