diff --git a/misc/scripts/copyright_headers.py b/misc/scripts/copyright_headers.py
index 121926f..7afd60f 100755
--- a/misc/scripts/copyright_headers.py
+++ b/misc/scripts/copyright_headers.py
@@ -11,7 +11,7 @@ header = """\
 /*                    PMLPP Machine Learning Library                     */
 /*                   https://github.com/Relintai/pmlpp                   */
 /*************************************************************************/
-/* Copyright (c) 2022-present Péter Magyar.                              */
+/* Copyright (c) 2023-present Péter Magyar.                              */
 /* Copyright (c) 2022-2023 Marc Melikyan                                 */
 /*                                                                       */
 /* Permission is hereby granted, free of charge, to any person obtaining */