diff --git a/xz-5.4.2.tar.gz b/xz-5.4.2.tar.gz
deleted file mode 100644
index c3b69b7..0000000
--- a/xz-5.4.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:87947679abcf77cc509d8d1b474218fd16b72281e2797360e909deaee1ac9d05
-size 2799022
diff --git a/xz-5.4.2.tar.gz.sig b/xz-5.4.2.tar.gz.sig
deleted file mode 100644
index 7876e92..0000000
Binary files a/xz-5.4.2.tar.gz.sig and /dev/null differ
diff --git a/xz-5.4.3.tar.gz b/xz-5.4.3.tar.gz
new file mode 100644
index 0000000..4fe9c8d
--- /dev/null
+++ b/xz-5.4.3.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1c382e0bc2e4e0af58398a903dd62fff7e510171d2de47a1ebe06d1528e9b7e9
+size 2869347
diff --git a/xz-5.4.3.tar.gz.sig b/xz-5.4.3.tar.gz.sig
new file mode 100644
index 0000000..f0c43a9
Binary files /dev/null and b/xz-5.4.3.tar.gz.sig differ
diff --git a/xz.changes b/xz.changes
index 63408aa..d2ddbf5 100644
--- a/xz.changes
+++ b/xz.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Fri May  5 05:47:01 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de>
+
+- Update to version 5.4.3:
+  * Build system fixes
+  * Translation updates: Croatian
+- update signing key
+
 -------------------------------------------------------------------
 Thu Apr  6 11:01:33 UTC 2023 - Frederic Crozat <fcrozat@suse.com>
 
diff --git a/xz.keyring b/xz.keyring
index 7e82196..597d039 100644
--- a/xz.keyring
+++ b/xz.keyring
@@ -1,56 +1,52 @@
-pub   4096R/69184620 2010-10-24
-uid                  Lasse Collin <lasse.collin@tukaani.org>
-sub   4096R/58ADF744 2010-10-24
-
 -----BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v2.0.22 (GNU/Linux)
 
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 -----END PGP PUBLIC KEY BLOCK-----
diff --git a/xz.spec b/xz.spec
index 572f1cd..e83ceac 100644
--- a/xz.spec
+++ b/xz.spec
@@ -19,7 +19,7 @@
 # avoid bootstrapping problem
 %define _binary_payload w9.bzdio
 Name:           xz
-Version:        5.4.2
+Version:        5.4.3
 Release:        0
 Summary:        A Program for Compressing Files with the Lempel–Ziv–Markov algorithm
 License:        GPL-2.0-or-later AND GPL-3.0-or-later AND LGPL-2.1-or-later AND SUSE-Public-Domain
@@ -28,8 +28,7 @@ URL:            https://tukaani.org/xz/
 Source0:        https://tukaani.org/xz/%{name}-%{version}.tar.gz
 Source1:        https://tukaani.org/xz/%{name}-%{version}.tar.gz.sig
 Source2:        baselibs.conf
-# from http://tukaani.org/misc/lasse_collin_pubkey.txt#/xz.keyring
-Source3:        xz.keyring
+Source3:        https://tukaani.org/misc/jia_tan_pubkey.txt#/%{name}.keyring
 Source4:        xznew
 Source5:        xznew.1
 BuildRequires:  pkgconfig