diff --git a/expat-2.4.2.tar.xz b/expat-2.4.2.tar.xz
deleted file mode 100644
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--- a/expat-2.4.2.tar.xz
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deleted file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/expat.changes b/expat.changes
index 2b9ac16..d1e5e6e 100644
--- a/expat.changes
+++ b/expat.changes
@@ -1,3 +1,35 @@
+-------------------------------------------------------------------
+Mon Jan 17 09:14:10 UTC 2022 - Dirk Müller <dmueller@suse.com>
+
+- update to 2.4.3 (bsc#1194251, bsc#1194362, bsc#1194474, 
+     bsc#1194476, bsc#1194477, bsc#1194478, bsc#1194479, bsc#1194480):
+  * CVE-2021-45960 -- Fix issues with left shifts by >=29 places
+    resulting in
+       a) realloc acting as free
+       b) realloc allocating too few bytes
+       c) undefined behavior
+    depending on architecture and precise value
+    for XML documents with >=2^27+1 prefixed attributes
+    on a single XML tag a la
+    "<r xmlns:a='[..]' a:a123='[..]' [..] />"
+    where XML_ParserCreateNS is used to create the parser
+    (which needs argument "-n" when running xmlwf).
+    Impact is denial of service, or more.
+  * CVE-2021-46143 (ZDI-CAN-16157) -- Fix integer overflow
+    on variable m_groupSize in function doProlog leading
+    to realloc acting as free.
+    Impact is denial of service or more.
+  * CVE-2022-22822 to CVE-2022-22827 -- Prevent integer overflows
+    near memory allocation at multiple places.  Mitre assigned
+    a dedicated CVE for each involved internal C function:
+    - CVE-2022-22822 for function addBinding
+    - CVE-2022-22823 for function build_model
+    - CVE-2022-22824 for function defineAttribute
+    - CVE-2022-22825 for function lookup
+    - CVE-2022-22826 for function nextScaffoldPart
+    - CVE-2022-22827 for function storeAtts
+    Impact is denial of service or more.
+
 -------------------------------------------------------------------
 Mon Dec 27 16:02:14 UTC 2021 - Dirk Müller <dmueller@suse.com>
 
diff --git a/expat.spec b/expat.spec
index cde1933..b58c7b0 100644
--- a/expat.spec
+++ b/expat.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package expat
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,9 +16,9 @@
 #
 
 
-%global unversion 2_4_2
+%global unversion 2_4_3
 Name:           expat
-Version:        2.4.2
+Version:        2.4.3
 Release:        0
 Summary:        XML Parser Toolkit
 License:        MIT