diff --git a/config/rootfiles/common/acl b/config/rootfiles/common/acl
index 505fd563c..9d449a60a 100644
--- a/config/rootfiles/common/acl
+++ b/config/rootfiles/common/acl
@@ -7,7 +7,7 @@ usr/bin/setfacl
 #usr/lib/libacl.la
 usr/lib/libacl.so
 usr/lib/libacl.so.1
-usr/lib/libacl.so.1.1.2302
+usr/lib/libacl.so.1.2.2400
 #usr/lib/pkgconfig/libacl.pc
 #usr/share/doc/acl
 #usr/share/doc/acl/CHANGES
@@ -37,6 +37,7 @@ usr/lib/libacl.so.1.1.2302
 #usr/share/man/man3/acl_copy_int.3
 #usr/share/man/man3/acl_create_entry.3
 #usr/share/man/man3/acl_delete_def_file.3
+#usr/share/man/man3/acl_delete_def_file_at.3
 #usr/share/man/man3/acl_delete_entry.3
 #usr/share/man/man3/acl_delete_perm.3
 #usr/share/man/man3/acl_dup.3
@@ -45,6 +46,7 @@ usr/lib/libacl.so.1.1.2302
 #usr/share/man/man3/acl_error.3
 #usr/share/man/man3/acl_extended_fd.3
 #usr/share/man/man3/acl_extended_file.3
+#usr/share/man/man3/acl_extended_file_at.3
 #usr/share/man/man3/acl_extended_file_nofollow.3
 #usr/share/man/man3/acl_free.3
 #usr/share/man/man3/acl_from_mode.3
@@ -52,6 +54,7 @@ usr/lib/libacl.so.1.1.2302
 #usr/share/man/man3/acl_get_entry.3
 #usr/share/man/man3/acl_get_fd.3
 #usr/share/man/man3/acl_get_file.3
+#usr/share/man/man3/acl_get_file_at.3
 #usr/share/man/man3/acl_get_perm.3
 #usr/share/man/man3/acl_get_permset.3
 #usr/share/man/man3/acl_get_qualifier.3
@@ -59,6 +62,7 @@ usr/lib/libacl.so.1.1.2302
 #usr/share/man/man3/acl_init.3
 #usr/share/man/man3/acl_set_fd.3
 #usr/share/man/man3/acl_set_file.3
+#usr/share/man/man3/acl_set_file_at.3
 #usr/share/man/man3/acl_set_permset.3
 #usr/share/man/man3/acl_set_qualifier.3
 #usr/share/man/man3/acl_set_tag_type.3
diff --git a/lfs/acl b/lfs/acl
index b0008d4db..9b6f90b96 100644
--- a/lfs/acl
+++ b/lfs/acl
@@ -1,7 +1,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2007-2024  IPFire Team  <info@ipfire.org>                     #
+# Copyright (C) 2007-2026  IPFire Team  <info@ipfire.org>                     #
 #                                                                             #
 # 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        #
@@ -24,7 +24,7 @@
 
 include Config
 
-VER        = 2.3.2
+VER        = 2.4.0
 
 THISAPP    = acl-$(VER)
 DL_FILE    = $(THISAPP).tar.xz
@@ -40,7 +40,7 @@ objects = $(DL_FILE)
 
 $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
 
-$(DL_FILE)_BLAKE2 = 9f2abfddcd403df2c716c05f02a1b52453613d10948dc58a65b9ef41b44e37db6de99fb22dcfc4f6f0fb5d0319c939da61bd4e0fba2cdb5643e8087ecd34eeac
+$(DL_FILE)_BLAKE2 = c7e4cd5dc482b1e9e283ca0ec6740cd1051d23e9cb533917e3d58e8d2381af516bb74d340f195a5e38f9f76466406a7b2e8f31dff5362ae2cc09e9d1f47eeec7
 
 install : $(TARGET)