diff --git a/chat/chat.c b/chat/chat.c
index 0a4fbd3f..788c42bd 100644
--- a/chat/chat.c
+++ b/chat/chat.c
@@ -3,7 +3,7 @@
  *	Chat -- a program for automatic session establishment (i.e. dial
  *		the phone and log in).
  *
- * This version is Copyright 1995-2023 Paul Mackerras <paulus@ozlabs.org>
+ * This version is Copyright 1995-2024 Paul Mackerras <paulus@ozlabs.org>
  * based on the original public-domain version by Karl Fox.
  *
  * Permission is hereby granted, free of charge, to any person
diff --git a/pppd/mppe.c b/pppd/mppe.c
index da10338e..880b2784 100644
--- a/pppd/mppe.c
+++ b/pppd/mppe.c
@@ -1,7 +1,7 @@
 /* mppe.c - MPPE key implementation
  *
  * Copyright (c) 2020 Eivind Naess. All rights reserved.
- * Copyright (c) 2008 Paul Mackerras. All rights reserved.
+ * Copyright (c) 2008-2024 Paul Mackerras. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
diff --git a/pppd/mppe.h b/pppd/mppe.h
index f2a4cb24..8ff27b97 100644
--- a/pppd/mppe.h
+++ b/pppd/mppe.h
@@ -1,7 +1,7 @@
 /*
  * mppe.h - Definitions for MPPE
  *
- * Copyright (c) 2008 Paul Mackerras. All rights reserved.
+ * Copyright (c) 2008-2024 Paul Mackerras. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
diff --git a/pppd/plugins/winbind.c b/pppd/plugins/winbind.c
index a3e5aa00..7af6ed1a 100644
--- a/pppd/plugins/winbind.c
+++ b/pppd/plugins/winbind.c
@@ -7,9 +7,10 @@
 * 
 * Based on the structure of the radius module.
 *
+* Copyright 1999-2024 Paul Mackerras <paulus@ozlabs.org>
 * Copyright (C) 2003 Andrew Bartlet <abartlet@samba.org>
 *
-* Copyright 1999 Paul Mackerras, Alan Curry. 
+* Copyright 1999 Alan Curry.
 * (pipe read code from passpromt.c)
 *
 * Copyright (C) 2002 Roaring Penguin Software Inc.