diff --git a/config/rootfiles/common/libunistring b/config/rootfiles/common/libunistring
index 0811a695d..634af1211 100644
--- a/config/rootfiles/common/libunistring
+++ b/config/rootfiles/common/libunistring
@@ -22,7 +22,7 @@
 #usr/lib/libunistring.la
 #usr/lib/libunistring.so
 usr/lib/libunistring.so.5
-usr/lib/libunistring.so.5.2.0
+usr/lib/libunistring.so.5.2.1
 #usr/share/doc/libunistring
 #usr/share/doc/libunistring/libunistring_1.html
 #usr/share/doc/libunistring/libunistring_10.html
diff --git a/lfs/libunistring b/lfs/libunistring
index 1ea398d39..5c6ce0514 100644
--- a/lfs/libunistring
+++ b/lfs/libunistring
@@ -1,7 +1,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2007-2025  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        = 1.3
+VER        = 1.4.2
 
 THISAPP    = libunistring-$(VER)
 DL_FILE    = $(THISAPP).tar.xz
@@ -42,7 +42,7 @@ objects = $(DL_FILE)
 
 $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
 
-$(DL_FILE)_BLAKE2 = 213d24ea4ba5e960a030bd83fc1b6c9d9a5e33d63ade8874e2a15d1b7a0acbe4b2d03df18065f6c17f01bfed94f7e70ef474e713f5c5ad2375cf2438457b0379
+$(DL_FILE)_BLAKE2 = a03c51d3b1295642f5933e1b129f1b3f81705ef10422a30e6786d36e5788334ee6fbff1d70b31e1a95a65a6869db35f7ce77f6a59555eadf1ee31ecf19d92ccd
 
 install : $(TARGET)