diff --git a/muparser-2.2.2.tar.bz2 b/muparser-2.2.2.tar.bz2
deleted file mode 100644
index 2637ebf..0000000
--- a/muparser-2.2.2.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:55e3f1bd167d48c0e86c26b413e0ebcc6cb5aa0c7dabc065d93a5590056f3e26
-size 1393987
diff --git a/muparser-2.2.3.tar.xz b/muparser-2.2.3.tar.xz
new file mode 100644
index 0000000..76f31ca
--- /dev/null
+++ b/muparser-2.2.3.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c19d9781324f7d5c2ac2905fb3b3f56338543d4d5f2a0c5dddd4631becc99e2
+size 755572
diff --git a/muparser.changes b/muparser.changes
index 5aa319b..b671343 100644
--- a/muparser.changes
+++ b/muparser.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Fri Jan 25 04:15:00 UTC 2013 - jengelh@inai.de
+
+- Update to new upstream release 2.2.3
+* fixed issue 3509860: Callbacks of functions with string
+  parameters were called twice
+- Remove muparser-fix-ac.diff, muparser-fix-undef.diff
+  (merged upstream)
+
 -------------------------------------------------------------------
 Thu Nov 29 19:03:48 UTC 2012 - jengelh@inai.de
 
diff --git a/muparser.spec b/muparser.spec
index 05cb8f8..1c16a24 100644
--- a/muparser.spec
+++ b/muparser.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package muparser
 #
-# Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -21,14 +21,13 @@ Name:           muparser
 Summary:        A math parser library
 License:        MIT
 Group:          Productivity/Scientific/Math
-Version:        2.2.2
+Version:        2.2.3
 Release:        0
 Url:            http://muparser.beltoforion.de/
 
+#DL-URL:	http://downloads.sf.net/muparser/muparser_v2_2_3.zip
 # quilt does not like zips very much. downloaded and repackaged.
-Source:         %name-%version.tar.bz2
-Patch1:         muparser-fix-ac.diff
-Patch2:         muparser-fix-undef.diff
+Source:         %name-%version.tar.xz
 Patch3:         muparser-optflags.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  autoconf
@@ -36,6 +35,7 @@ BuildRequires:  automake
 BuildRequires:  gcc-c++
 BuildRequires:  libtool
 BuildRequires:  pkgconfig
+BuildRequires:  xz
 
 %description
 muParser is an extensible high performance math parser library written in
@@ -63,7 +63,7 @@ precalculating constant parts of the expression.
 
 %prep
 %setup -q
-%patch -P 1 -P 2 -P 3 -p1
+%patch -P 3 -p1
 
 %build
 sh build/autoconf/acregen.sh
diff --git a/prepare-tar.sh b/prepare-tar.sh
new file mode 100644
index 0000000..1ae3d3d
--- /dev/null
+++ b/prepare-tar.sh
@@ -0,0 +1,12 @@
+#!/bin/sh -ex
+
+in="2_2_3";
+out="2.2.3";
+wget -c "http://downloads.sf.net/muparser/muparser_v$in.zip";
+unzip "muparser_v$in.zip";
+mv "muparser_v$in" "muparser-$out";
+find "muparser-$out" -type f "(" -iname "*.dll" -o -iname "*.lib" ")" \
+	-print -delete;
+tar --owner=root --group=root --use=xz -cf \
+	"muparser-$out.tar.xz" "muparser-$out";
+rm -Rf "muparser-$out";