diff --git a/COPYING b/COPYING
index e6000869..ce5cfc99 100644
--- a/COPYING
+++ b/COPYING
@@ -1,7 +1,7 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Copyright (C) 2007, 2023 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
diff --git a/Makefile.am b/Makefile.am
index 5e3f1d18..214fbb00 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `Wget' utility
-# Copyright (C) 1995-1997, 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 1995-1997, 2006-2023 Free Software Foundation, Inc.
 
 # 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
diff --git a/NEWS b/NEWS
index 344f9aa2..aca50a82 100644
--- a/NEWS
+++ b/NEWS
@@ -1187,7 +1187,7 @@ geturl -vo log http://fly.cc.fer.hr/
 ----------------------------------------------------------------------
 Copyright information:
 
-Copyright (C) 1997-2022 Free Software Foundation, Inc.
+Copyright (C) 1997-2023 Free Software Foundation, Inc.
 
    Permission is granted to anyone to make or distribute verbatim
    copies of this document as received, in any medium, provided that
diff --git a/README b/README
index fc9afcb7..fa49514c 100644
--- a/README
+++ b/README
@@ -60,7 +60,7 @@ the file AUTHORS for a list of major contributors, and the ChangeLogs
 for a detailed listing of all contributions.
 
 
-Copyright (C) 1995-2022 Free Software Foundation, Inc.
+Copyright (C) 1995-2023 Free Software Foundation, Inc.
 
 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
diff --git a/README.checkout b/README.checkout
index dd9cb350..6c5e964b 100644
--- a/README.checkout
+++ b/README.checkout
@@ -161,7 +161,7 @@ Testing and development
  that bug, which might be tedious. Tests should only be run through GDB for that purpose.
 
 
- Copyright (C) 2008, 2010, 2014-2015, 2018-2022 Free Software
+ Copyright (C) 2008, 2010, 2014-2015, 2018-2023 Free Software
  Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later
  <https://www.gnu.org/licenses/gpl.html>.
diff --git a/bootstrap b/bootstrap
index dc2238f4..c2a4cb0d 100755
--- a/bootstrap
+++ b/bootstrap
@@ -4,7 +4,7 @@ scriptversion=2022-01-26.05; # UTC
 
 # Bootstrap this package from checked-out sources.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
 # 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
diff --git a/bootstrap.conf b/bootstrap.conf
index 09fc4d0d..474b5980 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -1,5 +1,5 @@
 # bootstrap.conf - Bootstrap configuration.
-# Copyright (C) 2007-2012, 2018-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2012, 2018-2023 Free Software Foundation, Inc.
 #
 # This file is part of GNU Wget.
 #
diff --git a/build-aux/build_info.pl b/build-aux/build_info.pl
index 1fdd5c65..60e98c9c 100755
--- a/build-aux/build_info.pl
+++ b/build-aux/build_info.pl
@@ -2,7 +2,7 @@
 
 # Generate build_info.c.
 
-# Copyright (C) 2009-2011, 2018-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2011, 2018-2023 Free Software Foundation, Inc.
 
 # 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
diff --git a/configure.ac b/configure.ac
index 04aade9c..84aa48d7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Template file for GNU Autoconf
-dnl Copyright (C) 1995-1997, 2001, 2007-2014, 2018-2022 Free Software
+dnl Copyright (C) 1995-1997, 2001, 2007-2014, 2018-2023 Free Software
 dnl Foundation, Inc.
 
 dnl This program is free software; you can redistribute it and/or modify
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 417f123a..3942b728 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `wget' utility
-# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2022 Free Software
+# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2023 Free Software
 # Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/doc/fdl.texi b/doc/fdl.texi
index 8d79966c..9b1810f6 100644
--- a/doc/fdl.texi
+++ b/doc/fdl.texi
@@ -5,7 +5,7 @@
 @c hence no sectioning command or @node.
 
 @display
-Copyright @copyright{} 2000--2002, 2007--2008, 2015, 2018--2022 Free
+Copyright @copyright{} 2000--2002, 2007--2008, 2015, 2018--2023 Free
 Software Foundation, Inc.
 @uref{http://fsf.org/}
 
diff --git a/doc/texi2pod.pl b/doc/texi2pod.pl
index 9d362799..3f80d52b 100755
--- a/doc/texi2pod.pl
+++ b/doc/texi2pod.pl
@@ -1,6 +1,6 @@
 #! /usr/bin/env perl
 
-#   Copyright (C) 1999-2001, 2003, 2007, 2009-2011, 2015, 2018-2022 Free
+#   Copyright (C) 1999-2001, 2003, 2007, 2009-2011, 2015, 2018-2023 Free
 #   Software Foundation, Inc.
 
 # This file is part of GCC.
diff --git a/doc/wget.texi b/doc/wget.texi
index 400f6c11..25521d93 100644
--- a/doc/wget.texi
+++ b/doc/wget.texi
@@ -31,7 +31,7 @@ This file documents the GNU Wget utility for downloading network
 data.
 
 @c man begin COPYRIGHT
-Copyright @copyright{} 1996--2011, 2015, 2018--2022 Free Software
+Copyright @copyright{} 1996--2011, 2015, 2018--2023 Free Software
 Foundation, Inc.
 
 @iftex
diff --git a/fuzz/fuzzer.h b/fuzz/fuzzer.h
index d64e89cf..842a6c59 100644
--- a/fuzz/fuzzer.h
+++ b/fuzz/fuzzer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/glob_crash.c b/fuzz/glob_crash.c
index 02ffaa61..2d0a33be 100644
--- a/fuzz/glob_crash.c
+++ b/fuzz/glob_crash.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/main.c b/fuzz/main.c
index 7ac0917c..ebeaf113 100644
--- a/fuzz/main.c
+++ b/fuzz/main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/run-afl.sh b/fuzz/run-afl.sh
index e1be65d8..1e1af0f3 100755
--- a/fuzz/run-afl.sh
+++ b/fuzz/run-afl.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -eu
 
-# Copyright (c) 2017, 2019-2022 Free Software Foundation, Inc.
+# Copyright (c) 2017, 2019-2023 Free Software Foundation, Inc.
 #
 # This file is part of GNU Wget.
 #
diff --git a/fuzz/run-clang.sh b/fuzz/run-clang.sh
index 06525b1c..2f307a1d 100755
--- a/fuzz/run-clang.sh
+++ b/fuzz/run-clang.sh
@@ -1,6 +1,6 @@
 #!/bin/bash -e
 #
-# Copyright (c) 2017, 2019-2022 Free Software Foundation, Inc.
+# Copyright (c) 2017, 2019-2023 Free Software Foundation, Inc.
 #
 # This file is part of GNU Wget.
 #
diff --git a/fuzz/wget_cookie_fuzzer.c b/fuzz/wget_cookie_fuzzer.c
index 04e04535..7dcc1ccf 100644
--- a/fuzz/wget_cookie_fuzzer.c
+++ b/fuzz/wget_cookie_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_css_fuzzer.c b/fuzz/wget_css_fuzzer.c
index 5dce2451..2c9fa908 100644
--- a/fuzz/wget_css_fuzzer.c
+++ b/fuzz/wget_css_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_ftpls_fuzzer.c b/fuzz/wget_ftpls_fuzzer.c
index f36c7962..f0486cb8 100644
--- a/fuzz/wget_ftpls_fuzzer.c
+++ b/fuzz/wget_ftpls_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_html_fuzzer.c b/fuzz/wget_html_fuzzer.c
index 4d0d0e31..0eb8042b 100644
--- a/fuzz/wget_html_fuzzer.c
+++ b/fuzz/wget_html_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_netrc_fuzzer.c b/fuzz/wget_netrc_fuzzer.c
index 8e8bb6ea..63d698c6 100644
--- a/fuzz/wget_netrc_fuzzer.c
+++ b/fuzz/wget_netrc_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_ntlm_fuzzer.c b/fuzz/wget_ntlm_fuzzer.c
index e53121da..a981c6bf 100644
--- a/fuzz/wget_ntlm_fuzzer.c
+++ b/fuzz/wget_ntlm_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019, 2021-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2019, 2021-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_options_fuzzer.c b/fuzz/wget_options_fuzzer.c
index 8e140c1a..9acfff2c 100644
--- a/fuzz/wget_options_fuzzer.c
+++ b/fuzz/wget_options_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_progress_fuzzer.c b/fuzz/wget_progress_fuzzer.c
index 96d48bb5..d3fd06c6 100644
--- a/fuzz/wget_progress_fuzzer.c
+++ b/fuzz/wget_progress_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019, 2021-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2019, 2021-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_read_hunk_fuzzer.c b/fuzz/wget_read_hunk_fuzzer.c
index ce5f13ac..5d1b420d 100644
--- a/fuzz/wget_read_hunk_fuzzer.c
+++ b/fuzz/wget_read_hunk_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2019-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_robots_fuzzer.c b/fuzz/wget_robots_fuzzer.c
index 704a8d82..a0dd848b 100644
--- a/fuzz/wget_robots_fuzzer.c
+++ b/fuzz/wget_robots_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/fuzz/wget_url_fuzzer.c b/fuzz/wget_url_fuzzer.c
index c141b2d1..d5a55347 100644
--- a/fuzz/wget_url_fuzzer.c
+++ b/fuzz/wget_url_fuzzer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (c) 2017-2023 Free Software Foundation, Inc.
  *
  * This file is part of GNU Wget.
  *
diff --git a/m4/wget.m4 b/m4/wget.m4
index e0aaacf5..de03ecc7 100644
--- a/m4/wget.m4
+++ b/m4/wget.m4
@@ -1,5 +1,5 @@
 dnl Wget-specific Autoconf macros.
-dnl Copyright (C) 1995-2011, 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2011, 2018-2023 Free Software Foundation, Inc.
 
 dnl This program is free software; you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/m4/wget_manywarnings.m4 b/m4/wget_manywarnings.m4
index 3d281a1a..b977bd2c 100644
--- a/m4/wget_manywarnings.m4
+++ b/m4/wget_manywarnings.m4
@@ -1,5 +1,5 @@
 # wget_manywarnings.m4 serial 1
-dnl Copyright (C) 2016-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2016-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/msdos/config.h b/msdos/config.h
index 35fb72ac..7d69f590 100644
--- a/msdos/config.h
+++ b/msdos/config.h
@@ -1,6 +1,5 @@
 /* Configuration header file for MS-DOS/Watt-32
-   Copyright (C) 2007, 2008, 2009, 2010, 2011, 2015 Free Software
-   Foundation, Inc.
+   Copyright (C) 2007-2011, 2015, 2023 Free Software Foundation, Inc.
 
    This file is part of GNU Wget.
 
diff --git a/msdos/msdos.c b/msdos/msdos.c
index 9b3a0068..a1801309 100644
--- a/msdos/msdos.c
+++ b/msdos/msdos.c
@@ -1,5 +1,5 @@
 /* MSDOS utility functions.
-   Copyright (C) 2009, 2010, 2011, 2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2011, 2015, 2023 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
diff --git a/po/POTFILES.in b/po/POTFILES.in
index a093e287..39fe9a7d 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,5 +1,5 @@
 # List of files which containing translatable strings.
-# Copyright (C) 1995-2011, 2018-2022 Free Software Foundation, Inc.
+# Copyright (C) 1995-2011, 2018-2023 Free Software Foundation, Inc.
 
 # Package source files
 src/connect.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 5a072977..4b56ac92 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `wget' utility
-# Copyright (C) 1995-2011, 2015, 2018-2022 Free Software Foundation,
+# Copyright (C) 1995-2011, 2015, 2018-2023 Free Software Foundation,
 # Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/src/connect.c b/src/connect.c
index 455b9b17..780de480 100644
--- a/src/connect.c
+++ b/src/connect.c
@@ -1,5 +1,5 @@
 /* Establishing and handling network connections.
-   Copyright (C) 1995-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1995-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/connect.h b/src/connect.h
index 46f05b4a..d03a1708 100644
--- a/src/connect.h
+++ b/src/connect.h
@@ -1,5 +1,5 @@
 /* Declarations for connect.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/convert.c b/src/convert.c
index 43551530..b934d49b 100644
--- a/src/convert.c
+++ b/src/convert.c
@@ -1,5 +1,5 @@
 /* Conversion of links to local files.
-   Copyright (C) 2003-2011, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 2003-2011, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/convert.h b/src/convert.h
index 637df6e1..6697aa71 100644
--- a/src/convert.h
+++ b/src/convert.h
@@ -1,5 +1,5 @@
 /* Declarations for convert.c
-   Copyright (C) 2003-2006, 2009-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2003-2006, 2009-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/cookies.c b/src/cookies.c
index 8d903d7b..48ca9ee4 100644
--- a/src/cookies.c
+++ b/src/cookies.c
@@ -1,5 +1,5 @@
 /* Support for cookies.
-   Copyright (C) 2001-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2001-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/cookies.h b/src/cookies.h
index 308f768a..e5d50cdb 100644
--- a/src/cookies.h
+++ b/src/cookies.h
@@ -1,5 +1,5 @@
 /* Support for cookies.
-   Copyright (C) 2001-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2001-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/css-tokens.h b/src/css-tokens.h
index 12333d1b..5981dc50 100644
--- a/src/css-tokens.h
+++ b/src/css-tokens.h
@@ -1,5 +1,5 @@
 /* Declarations for css.lex
-   Copyright (C) 2006, 2009-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2006, 2009-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/css-url.c b/src/css-url.c
index c6e18bbb..20abfec2 100644
--- a/src/css-url.c
+++ b/src/css-url.c
@@ -1,5 +1,5 @@
 /* Collect URLs from CSS source.
-   Copyright (C) 1998, 2000-2003, 2009-2011, 2014-2015, 2018-2022 Free
+   Copyright (C) 1998, 2000-2003, 2009-2011, 2014-2015, 2018-2023 Free
    Software Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/css-url.h b/src/css-url.h
index 52205705..6cf4cc07 100644
--- a/src/css-url.h
+++ b/src/css-url.h
@@ -1,5 +1,5 @@
 /* Declarations for css-url.c.
-   Copyright (C) 2006, 2009-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2006, 2009-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/css.l b/src/css.l
index 0f0a8a08..f6a14fb8 100644
--- a/src/css.l
+++ b/src/css.l
@@ -12,7 +12,7 @@
 %{
 /* Lex source for CSS tokenizing.
    Taken from http://www.w3.org/TR/CSS21/grammar.html#q2
-   Copyright (C) 2006, 2009-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2006, 2009-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/exits.c b/src/exits.c
index adce4f9f..5c380a36 100644
--- a/src/exits.c
+++ b/src/exits.c
@@ -1,5 +1,5 @@
 /* Exit status handling.
-   Copyright (C) 2009-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2009-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
    This file is part of GNU Wget.
diff --git a/src/exits.h b/src/exits.h
index f333a769..627a8dfb 100644
--- a/src/exits.h
+++ b/src/exits.h
@@ -1,5 +1,5 @@
 /* Exit status related declarations.
-   Copyright (C) 2009-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2009-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ftp-basic.c b/src/ftp-basic.c
index c2fd8dc2..d999027a 100644
--- a/src/ftp-basic.c
+++ b/src/ftp-basic.c
@@ -1,5 +1,5 @@
 /* Basic FTP routines.
-   Copyright (C) 1996-2011, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2011, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ftp-ls.c b/src/ftp-ls.c
index 6adcad38..86f5bbd5 100644
--- a/src/ftp-ls.c
+++ b/src/ftp-ls.c
@@ -1,5 +1,5 @@
 /* Parsing FTP `ls' output.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ftp-opie.c b/src/ftp-opie.c
index e744435d..d04876e5 100644
--- a/src/ftp-opie.c
+++ b/src/ftp-opie.c
@@ -1,5 +1,5 @@
 /* Opie (s/key) support for FTP.
-   Copyright (C) 1998-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ftp.c b/src/ftp.c
index 7683d6f6..5296124d 100644
--- a/src/ftp.c
+++ b/src/ftp.c
@@ -1,5 +1,5 @@
 /* File Transfer Protocol support.
-   Copyright (C) 1996-2011, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2011, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ftp.h b/src/ftp.h
index f3192939..91b94885 100644
--- a/src/ftp.h
+++ b/src/ftp.h
@@ -1,5 +1,5 @@
 /* Declarations for FTP support.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/gnutls.c b/src/gnutls.c
index 41e40b4e..689c9e41 100644
--- a/src/gnutls.c
+++ b/src/gnutls.c
@@ -1,5 +1,5 @@
 /* SSL support via GnuTLS library.
-   Copyright (C) 2005-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/hash.c b/src/hash.c
index 54e39ded..25668dfa 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -1,5 +1,5 @@
 /* Hash tables.
-   Copyright (C) 2000-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2000-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/hash.h b/src/hash.h
index f504260c..e2b5cb21 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -1,5 +1,5 @@
 /* Hash table declarations.
-   Copyright (C) 2000, 2007-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2000, 2007-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/host.c b/src/host.c
index 9b9aa6b4..ae4d671b 100644
--- a/src/host.c
+++ b/src/host.c
@@ -1,5 +1,5 @@
 /* Host name resolution and matching.
-   Copyright (C) 1996-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/host.h b/src/host.h
index da205d93..153d1177 100644
--- a/src/host.h
+++ b/src/host.h
@@ -1,5 +1,5 @@
 /* Declarations for host.c
-   Copyright (C) 1996-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/hsts.c b/src/hsts.c
index 72c5e936..20eddb17 100644
--- a/src/hsts.c
+++ b/src/hsts.c
@@ -1,5 +1,5 @@
 /* HTTP Strict Transport Security (HSTS) support.
-   Copyright (C) 1996-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/hsts.h b/src/hsts.h
index be048944..61792cab 100644
--- a/src/hsts.h
+++ b/src/hsts.h
@@ -1,5 +1,5 @@
 /* Declarations for hsts.c
-   Copyright (C) 1996-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/html-parse.c b/src/html-parse.c
index e99c80ea..91a8c2b3 100644
--- a/src/html-parse.c
+++ b/src/html-parse.c
@@ -1,5 +1,5 @@
 /* HTML parser for Wget.
-   Copyright (C) 1998-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/html-parse.h b/src/html-parse.h
index 4176eb26..a7ad8c2e 100644
--- a/src/html-parse.h
+++ b/src/html-parse.h
@@ -1,5 +1,5 @@
 /* Declarations for html-parse.c.
-   Copyright (C) 1998-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/html-url.c b/src/html-url.c
index 53d3a934..4bcb1751 100644
--- a/src/html-url.c
+++ b/src/html-url.c
@@ -1,5 +1,5 @@
 /* Collect URLs from HTML source.
-   Copyright (C) 1998-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/html-url.h b/src/html-url.h
index 4207b789..21f53aca 100644
--- a/src/html-url.h
+++ b/src/html-url.h
@@ -1,5 +1,5 @@
 /* Declarations for html-url.c.
-   Copyright (C) 1995-1997, 2009-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 1995-1997, 2009-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/http-ntlm.c b/src/http-ntlm.c
index ba58a86e..072a01d9 100644
--- a/src/http-ntlm.c
+++ b/src/http-ntlm.c
@@ -1,5 +1,5 @@
 /* NTLM code.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
    Contributed by Daniel Stenberg.
 
diff --git a/src/http-ntlm.h b/src/http-ntlm.h
index 5d1699ae..cff1fd03 100644
--- a/src/http-ntlm.h
+++ b/src/http-ntlm.h
@@ -1,7 +1,7 @@
 #ifndef __HTTP_NTLM_H
 #define __HTTP_NTLM_H
 /* Declarations for http_ntlm.c
-   Copyright (C) 1995-1997, 2000, 2007-2011, 2015, 2018-2022 Free
+   Copyright (C) 1995-1997, 2000, 2007-2011, 2015, 2018-2023 Free
    Software Foundation, Inc.
    Contributed by Daniel Stenberg.
 
diff --git a/src/http.c b/src/http.c
index 6ccfc3a0..e3a1a394 100644
--- a/src/http.c
+++ b/src/http.c
@@ -1,5 +1,5 @@
 /* HTTP support.
-   Copyright (C) 1996-2012, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2012, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/http.h b/src/http.h
index 98264470..198967a6 100644
--- a/src/http.h
+++ b/src/http.h
@@ -1,5 +1,5 @@
 /* Declarations for HTTP.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/init.c b/src/init.c
index 8cd534d7..b5e36951 100644
--- a/src/init.c
+++ b/src/init.c
@@ -1,5 +1,5 @@
 /* Reading/parsing the initialization file.
-   Copyright (C) 1996-2012, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2012, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/init.h b/src/init.h
index 2d32c3f2..689e78be 100644
--- a/src/init.h
+++ b/src/init.h
@@ -1,5 +1,5 @@
 /* Declarations for init.c.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/iri.c b/src/iri.c
index 4bac3499..ca767637 100644
--- a/src/iri.c
+++ b/src/iri.c
@@ -1,5 +1,5 @@
 /* IRI related functions.
-   Copyright (C) 2008-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2008-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/iri.h b/src/iri.h
index 0ad04633..447b0113 100644
--- a/src/iri.h
+++ b/src/iri.h
@@ -1,5 +1,5 @@
 /* Internationalization related declarations.
-   Copyright (C) 2008-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2008-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/log.c b/src/log.c
index 91781695..f4411850 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,5 +1,5 @@
 /* Messages logging.
-   Copyright (C) 1998-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/log.h b/src/log.h
index c8ea3abd..11e46b76 100644
--- a/src/log.h
+++ b/src/log.h
@@ -1,5 +1,5 @@
 /* Declarations for log.c.
-   Copyright (C) 1998-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1998-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/main.c b/src/main.c
index f9bb4074..87fa2e09 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,5 @@
 /* Command line parsing.
-   Copyright (C) 1996-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2015, 2018-2023 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
diff --git a/src/metalink.c b/src/metalink.c
index 12f35883..0370f80c 100644
--- a/src/metalink.c
+++ b/src/metalink.c
@@ -1,5 +1,5 @@
 /* Metalink module.
-   Copyright (C) 2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015, 2018-2023 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
diff --git a/src/metalink.h b/src/metalink.h
index 2ca0a322..956f9727 100644
--- a/src/metalink.h
+++ b/src/metalink.h
@@ -1,5 +1,5 @@
 /* Declarations for metalink.c.
-   Copyright (C) 2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015, 2018-2023 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
diff --git a/src/mswindows.c b/src/mswindows.c
index 455f4752..b24ff3a9 100644
--- a/src/mswindows.c
+++ b/src/mswindows.c
@@ -1,5 +1,5 @@
 /* mswindows.c -- Windows-specific support
-   Copyright (C) 1996-2011, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2011, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/mswindows.h b/src/mswindows.h
index f89af54b..1a0f350b 100644
--- a/src/mswindows.h
+++ b/src/mswindows.h
@@ -1,5 +1,5 @@
 /* Declarations for windows
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/netrc.c b/src/netrc.c
index 44f8a81c..25a8393b 100644
--- a/src/netrc.c
+++ b/src/netrc.c
@@ -1,5 +1,5 @@
 /* Read and parse the .netrc file to get hosts, accounts, and passwords.
-   Copyright (C) 1996, 2007-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 1996, 2007-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/netrc.h b/src/netrc.h
index 956dfb82..e5e6e679 100644
--- a/src/netrc.h
+++ b/src/netrc.h
@@ -1,5 +1,5 @@
 /* Declarations for netrc.c
-   Copyright (C) 1996, 1996-1997, 2007-2011, 2015, 2018-2022 Free
+   Copyright (C) 1996, 1996-1997, 2007-2011, 2015, 2018-2023 Free
    Software Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/openssl.c b/src/openssl.c
index 4f4fea0a..c18b5050 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -1,5 +1,5 @@
 /* SSL support via OpenSSL library.
-   Copyright (C) 2000-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2000-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
    Originally contributed by Christian Fraenkel.
 
diff --git a/src/options.h b/src/options.h
index b044b959..d4805a98 100644
--- a/src/options.h
+++ b/src/options.h
@@ -1,5 +1,5 @@
 /* struct options.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/progress.c b/src/progress.c
index 0ab7e18a..4784c592 100644
--- a/src/progress.c
+++ b/src/progress.c
@@ -1,5 +1,5 @@
 /* Download progress.
-   Copyright (C) 2001-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2001-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/progress.h b/src/progress.h
index b740b28d..b2df28a4 100644
--- a/src/progress.h
+++ b/src/progress.h
@@ -1,5 +1,5 @@
 /* Download progress.
-   Copyright (C) 2001-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2001-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ptimer.c b/src/ptimer.c
index 42007e93..6f70cc0e 100644
--- a/src/ptimer.c
+++ b/src/ptimer.c
@@ -1,5 +1,5 @@
 /* Portable timers.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ptimer.h b/src/ptimer.h
index acef2aab..9c2eb845 100644
--- a/src/ptimer.h
+++ b/src/ptimer.h
@@ -1,5 +1,5 @@
 /* Declarations for ptimer.c.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/recur.c b/src/recur.c
index acbb7b9e..260307da 100644
--- a/src/recur.c
+++ b/src/recur.c
@@ -1,5 +1,5 @@
 /* Handling of recursive HTTP retrieving.
-   Copyright (C) 1996-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/recur.h b/src/recur.h
index a40b8acb..fc040c12 100644
--- a/src/recur.h
+++ b/src/recur.h
@@ -1,5 +1,5 @@
 /* Declarations for recur.c.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/res.c b/src/res.c
index 4ff228e8..9bf34014 100644
--- a/src/res.c
+++ b/src/res.c
@@ -1,5 +1,5 @@
 /* Support for Robot Exclusion Standard (RES).
-   Copyright (C) 2001, 2006-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2001, 2006-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of Wget.
diff --git a/src/res.h b/src/res.h
index dcf1267f..0b2453cd 100644
--- a/src/res.h
+++ b/src/res.h
@@ -1,5 +1,5 @@
 /* Declarations for res.c.
-   Copyright (C) 2001, 2007-2011, 2015, 2018-2022 Free Software
+   Copyright (C) 2001, 2007-2011, 2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of Wget.
diff --git a/src/retr.c b/src/retr.c
index 615802fb..a2b819bb 100644
--- a/src/retr.c
+++ b/src/retr.c
@@ -1,5 +1,5 @@
 /* File retrieval.
-   Copyright (C) 1996-2011, 2014-2015, 2018-2022 Free Software
+   Copyright (C) 1996-2011, 2014-2015, 2018-2023 Free Software
    Foundation, Inc.
 
 This file is part of GNU Wget.
diff --git a/src/retr.h b/src/retr.h
index 8f977377..84814e11 100644
--- a/src/retr.h
+++ b/src/retr.h
@@ -1,5 +1,5 @@
 /* Declarations for retr.c.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/spider.c b/src/spider.c
index 3045b788..726a7b35 100644
--- a/src/spider.c
+++ b/src/spider.c
@@ -1,5 +1,5 @@
 /* Keep track of visited URLs in spider mode.
-   Copyright (C) 2006-2011, 2015, 2019-2022 Free Software Foundation,
+   Copyright (C) 2006-2011, 2015, 2019-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/spider.h b/src/spider.h
index 36c71211..5001a8ef 100644
--- a/src/spider.h
+++ b/src/spider.h
@@ -1,5 +1,5 @@
 /* Declarations for spider.c
-   Copyright (C) 2006-2011, 2015, 2019-2022 Free Software Foundation,
+   Copyright (C) 2006-2011, 2015, 2019-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/ssl.h b/src/ssl.h
index 4636e3f4..02d885d9 100644
--- a/src/ssl.h
+++ b/src/ssl.h
@@ -1,5 +1,5 @@
 /* SSL support.
-   Copyright (C) 2000-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2000-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
    Originally contributed by Christian Fraenkel.
 
diff --git a/src/sysdep.h b/src/sysdep.h
index 9d5ff329..db6c3647 100644
--- a/src/sysdep.h
+++ b/src/sysdep.h
@@ -1,5 +1,5 @@
 /* Dirty system-dependent hacks.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/url.c b/src/url.c
index 5dfb91a2..63030705 100644
--- a/src/url.c
+++ b/src/url.c
@@ -1,5 +1,5 @@
 /* URL handling.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/url.h b/src/url.h
index 02f0ec36..72c0079e 100644
--- a/src/url.h
+++ b/src/url.h
@@ -1,5 +1,5 @@
 /* Declarations for url.c.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/utils.c b/src/utils.c
index dca9b929..794d3a57 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,5 +1,5 @@
 /* Various utility functions.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/utils.h b/src/utils.h
index 678fcb52..42e4c183 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1,5 +1,5 @@
 /* Declarations for utils.c.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/version.h b/src/version.h
index 1ae16bc2..2011f324 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,5 +1,5 @@
 /* Extern declarations for printing version information
-   Copyright (C) 2013, 2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2013, 2015, 2018-2023 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
diff --git a/src/warc.c b/src/warc.c
index c545da8c..4770ffe6 100644
--- a/src/warc.c
+++ b/src/warc.c
@@ -1,5 +1,5 @@
 /* Utility functions for writing WARC files.
-   Copyright (C) 2011-2012, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2011-2012, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/wget.h b/src/wget.h
index 460e7cd9..8cd212a4 100644
--- a/src/wget.h
+++ b/src/wget.h
@@ -1,5 +1,5 @@
 /* Miscellaneous declarations.
-   Copyright (C) 1996-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 1996-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/src/xattr.c b/src/xattr.c
index 98a002a0..b3bfea3d 100644
--- a/src/xattr.c
+++ b/src/xattr.c
@@ -1,6 +1,6 @@
 /* xattr.h -- POSIX Extended Attribute support.
 
-   Copyright (C) 2016, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016, 2018-2023 Free Software Foundation, Inc.
 
    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
diff --git a/src/xattr.h b/src/xattr.h
index bd4f45a8..1f7eb9c2 100644
--- a/src/xattr.h
+++ b/src/xattr.h
@@ -1,6 +1,6 @@
 /* xattr.h -- POSIX Extended Attribute function mappings.
 
-   Copyright (C) 2016, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016, 2018-2023 Free Software Foundation, Inc.
 
    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
diff --git a/testenv/Makefile.am b/testenv/Makefile.am
index 7996af26..b34dcf3d 100644
--- a/testenv/Makefile.am
+++ b/testenv/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `wget' utility
-# Copyright (C) 2013, 2015, 2018-2022 Free Software Foundation, Inc.
+# Copyright (C) 2013, 2015, 2018-2023 Free Software Foundation, Inc.
 
 # 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
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 66dc28f0..45c0b16d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `wget' utility
-# Copyright (C) 1995-2011, 2015, 2018-2022 Free Software Foundation,
+# Copyright (C) 1995-2011, 2015, 2018-2023 Free Software Foundation,
 # Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/tests/unit-tests.c b/tests/unit-tests.c
index 5f818c78..085a0321 100644
--- a/tests/unit-tests.c
+++ b/tests/unit-tests.c
@@ -1,5 +1,5 @@
 /* Unit testing.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/tests/unit-tests.h b/tests/unit-tests.h
index 8dfe165d..16573b1c 100644
--- a/tests/unit-tests.h
+++ b/tests/unit-tests.h
@@ -1,5 +1,5 @@
 /* Unit testing declarations.
-   Copyright (C) 2005-2011, 2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2005-2011, 2015, 2018-2023 Free Software Foundation,
    Inc.
 
 This file is part of GNU Wget.
diff --git a/util/Makefile.am b/util/Makefile.am
index cb3a1e69..4f846acc 100644
--- a/util/Makefile.am
+++ b/util/Makefile.am
@@ -1,5 +1,5 @@
 # Makefile for `wget' utility
-# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2022 Free Software
+# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2023 Free Software
 # Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/util/paramcheck.pl b/util/paramcheck.pl
index 4f2d9846..6a5b0fa5 100755
--- a/util/paramcheck.pl
+++ b/util/paramcheck.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl
 
-# Copyright (C) 2008-2011, 2015, 2018-2022 Free Software Foundation,
+# Copyright (C) 2008-2011, 2015, 2018-2023 Free Software Foundation,
 # Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/util/rmold.pl b/util/rmold.pl
index f3b64526..a546afd8 100755
--- a/util/rmold.pl
+++ b/util/rmold.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl -w
 
-# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2022 Free Software
+# Copyright (C) 1995-1997, 2007-2011, 2015, 2018-2023 Free Software
 # Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify