diff --git a/autogen.sh b/autogen.sh
index 35623858..a0b4936f 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,7 +4,7 @@
 # also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
 # with new versions of autoconf or automake.
 
-# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+# Copyright (C) 2003-2024 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/autopull.sh b/autopull.sh
index 0135a275..0d874f82 100755
--- a/autopull.sh
+++ b/autopull.sh
@@ -2,7 +2,7 @@
 # Convenience script for fetching auxiliary files that are omitted from
 # the version control repository of this package.
 
-# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+# Copyright (C) 2003-2024 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 b/bootstrap
index 6c170d35..5141c925 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,9 +1,9 @@
 #! /bin/sh
 # Bootstrap this package from checked-out sources.
 
-scriptversion=2023-08-29.21; # UTC
+scriptversion=2023-12-10.18; # UTC
 
-# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+# Copyright (C) 2003-2024 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
@@ -192,7 +192,7 @@ check_build_prerequisites $use_git
 
 if $bootstrap_sync; then
   prepare_GNULIB_SRCDIR
-  upgrade_bootstrap
+  upgrade_bootstrap "$@"
   # Since we have now upgraded if needed, no need to try it a second time below.
   bootstrap_sync=false
 fi
diff --git a/bootstrap-funclib.sh b/bootstrap-funclib.sh
index 54deea66..9e40f4a3 100644
--- a/bootstrap-funclib.sh
+++ b/bootstrap-funclib.sh
@@ -1,8 +1,8 @@
 # A library of shell functions for autopull.sh, autogen.sh, and bootstrap.
 
-scriptlibversion=2023-08-29.21; # UTC
+scriptlibversion=2023-12-10.18; # UTC
 
-# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+# Copyright (C) 2003-2024 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
@@ -740,7 +740,7 @@ autopull()
   if $use_gnulib || $bootstrap_sync; then
     prepare_GNULIB_SRCDIR
     if $bootstrap_sync; then
-      upgrade_bootstrap
+      upgrade_bootstrap "$@"
     fi
   fi
 
diff --git a/gnulib b/gnulib
index 2b63182e..d57daa59 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 2b63182ece42f65f1ee6b5290fad2901fb7dbe77
+Subproject commit d57daa5979535178a57789403506270b6311cc85
diff --git a/tests/init.sh b/tests/init.sh
index 0494097e..aef5eea8 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,6 +1,6 @@
 # source this file; set up for tests
 
-# Copyright (C) 2009-2023 Free Software Foundation, Inc.
+# Copyright (C) 2009-2024 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