diff --git a/doc/faq.adoc b/doc/faq.adoc
index 06eaabc..8fd350f 100644
--- a/doc/faq.adoc
+++ b/doc/faq.adoc
@@ -1,6 +1,7 @@
 // This file is part of chrony
 //
 // Copyright (C) Richard P. Curnow  1997-2003
+// Copyright (C) Luke Valenta  2023
 // Copyright (C) Miroslav Lichvar  2014-2016, 2020-2023
 //
 // This program is free software; you can redistribute it and/or modify
diff --git a/siv_gnutls.c b/siv_gnutls.c
index 04628eb..a0a712c 100644
--- a/siv_gnutls.c
+++ b/siv_gnutls.c
@@ -2,7 +2,7 @@
   chronyd/chronyc - Programs for keeping computer clocks accurate.
 
  **********************************************************************
- * Copyright (C) Miroslav Lichvar  2020
+ * Copyright (C) Miroslav Lichvar  2020, 2023
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
diff --git a/socket.c b/socket.c
index bc98a4f..5b22db5 100644
--- a/socket.c
+++ b/socket.c
@@ -5,6 +5,7 @@
  * Copyright (C) Richard P. Curnow  1997-2003
  * Copyright (C) Timo Teras  2009
  * Copyright (C) Miroslav Lichvar  2009, 2013-2020
+ * Copyright (C) Luke Valenta  2023
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
diff --git a/test/unit/util.c b/test/unit/util.c
index f434671..d52a268 100644
--- a/test/unit/util.c
+++ b/test/unit/util.c
@@ -1,6 +1,6 @@
 /*
  **********************************************************************
- * Copyright (C) Miroslav Lichvar  2017-2018, 2021
+ * Copyright (C) Miroslav Lichvar  2017-2018, 2021, 2023
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as