diff --git a/libytnef-1.5.tar.bz b/libytnef-1.5.tar.bz
deleted file mode 100644
index 6bbe1d0..0000000
Binary files a/libytnef-1.5.tar.bz and /dev/null differ
diff --git a/libytnef-bufferoverflow.patch b/libytnef-bufferoverflow.patch
deleted file mode 100644
index 4498729..0000000
--- a/libytnef-bufferoverflow.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-From 492f2ea1326d7825943f48aff31ed0ddc89fd2b7 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
-Date: Wed, 4 Jul 2012 17:04:44 +0200
-Subject: [PATCH] Fix off-by-one error when copying RTF header
-
-The RTF header (RTF_PREBUF) string is copied to temporary buffer. The
-terminating '\0' is never accessed, so it's not needed and cannot be
-written after the allocated buffer.
-
-<http://sourceforge.net/tracker/?func=detail&aid=2949686&group_id=70352&atid=527487>
-<https://bugzilla.redhat.com/show_bug.cgi?id=831322>
----
- ytnef.c |    2 +-
- 1 files changed, 1 insertions(+), 1 deletions(-)
-
-diff --git a/ytnef.c b/ytnef.c
-index 482ecdc..970c048 100644
---- a/ytnef.c
-+++ b/ytnef.c
-@@ -1328,7 +1328,7 @@ unsigned char *DecompressRTF(variableLength *p, int *size) {
- 
-     comp_Prebuf.size = strlen(RTF_PREBUF);
-     comp_Prebuf.data = calloc(comp_Prebuf.size, 1);
--    strcpy(comp_Prebuf.data, RTF_PREBUF);
-+    memcpy(comp_Prebuf.data, RTF_PREBUF, comp_Prebuf.size);
- 
-     src = p->data;
-     in = 0;
--- 
-1.7.7.6
diff --git a/libytnef.spec b/libytnef.spec
index b333f23..3f7d86d 100644
--- a/libytnef.spec
+++ b/libytnef.spec
@@ -1,36 +1,41 @@
-Name:           libytnef
-Version:        1.5
+Name:           ytnef
+Version:        2.0
 Release:        1
 Summary:        TNEF Stream Parser Library
-
-Group:          System Environment/Libraries
-License:        GPL+
-URL:            http://ytnef.sf.net
-Source0:        http://dl.sf.net/ytnef/libytnef-1.5.tar.bz
-# fixes potential bufferoverflow
-# rhbz#831322
-Patch0:         libytnef-bufferoverflow.patch
+License:        GPLv2+
+URL:            https://github.com/Yeraze/ytnef
+Source0:        https://github.com/Yeraze/ytnef/archive/v%{version}/%{name}-%{version}.tar.gz
+Patch0:         ytnef-pkgconfig.patch
+BuildRequires:  make autoconf automake libtool perl-generators
+Requires:       libytnef = %{version}-%{release}
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 
 %description
+Yerase's TNEF Stream Reader.  Can take a TNEF Stream (winmail.dat) sent from
+Microsoft Outlook (or similar products) and extract the attachments, including
+construction of Contact Cards & Calendar entries.
+
+%package -n     libytnef
+Summary:        TNEF Stream Reader Library
+
+%description -n libytnef
 TNEF Stream Parser Library, used by "ytnef" to decode TNEF (winmail.dat)
 streams generated by Microsoft Outlook.
 
+%package -n     libytnef-devel
+Summary:        Development files for libytnef
+Requires:       libytnef = %{version}-%{release}
 
-%package        devel
-Summary:        Development files for %{name}
-Group:          Development/Libraries
-Requires:       %{name} = %{version}-%{release}
-
-%description    devel
-The %{name}-devel package contains libraries and header files for
-developing applications that use %{name}.
+%description -n libytnef-devel
+The libytnef-devel package contains libraries and header files for
+developing applications that use libytnef.
 
 
 %prep
 %setup -q
-%patch0 -p1 -b.bufferoverflow
+./autogen.sh
+%patch0 -p1
 
 %build
 %configure --disable-static
@@ -39,7 +44,7 @@ make %{?_smp_mflags}
 
 %install
 rm -rf $RPM_BUILD_ROOT
-make install DESTDIR=$RPM_BUILD_ROOT includedir=%{_includedir}/%{name}
+make install DESTDIR=$RPM_BUILD_ROOT includedir=%{_includedir}/libytnef
 find $RPM_BUILD_ROOT -name '*.la' -exec rm -f {} ';'
 
 
@@ -51,18 +56,25 @@ rm -rf $RPM_BUILD_ROOT
 
 %postun -p /sbin/ldconfig
 
-
 %files
+%license COPYING
+%{_bindir}/*
+
+%files -n libytnef
 %defattr(-,root,root,-)
 %doc ChangeLog COPYING
 %{_libdir}/*.so.*
 
-%files devel
+%files -n libytnef-devel
 %defattr(-,root,root,-)
-%{_includedir}/%{name}/
+%{_includedir}/libytnef/
 %{_libdir}/*.so
+%{_libdir}/pkgconfig/libytnef.pc
 
 
 %changelog
-* Wen Sep 22 2021 douyan <douyan@kylinos.cn> - 1.5.1-1
-- Init package for openEuler
\ No newline at end of file
+* Thu Jul 21 2022 duyiwei <duyiwei@kylinos.cn> - 2.0-1
+- upgrade to v2.0
+
+* Wed Sep 22 2021 douyan <douyan@kylinos.cn> - 1.5.1-1
+- Init package for openEuler
diff --git a/ytnef-2.0.tar.gz b/ytnef-2.0.tar.gz
new file mode 100644
index 0000000..011103d
Binary files /dev/null and b/ytnef-2.0.tar.gz differ
diff --git a/ytnef-pkgconfig.patch b/ytnef-pkgconfig.patch
new file mode 100644
index 0000000..92d13a2
--- /dev/null
+++ b/ytnef-pkgconfig.patch
@@ -0,0 +1,9 @@
+diff -up ytnef-1.9.2/lib/libytnef.pc.in.orig ytnef-1.9.2/lib/libytnef.pc.in
+--- ytnef-1.9.2/lib/libytnef.pc.in.orig	2017-03-28 10:50:58.496400854 +0200
++++ ytnef-1.9.2/lib/libytnef.pc.in	2017-03-28 10:51:20.576558722 +0200
+@@ -8,4 +8,4 @@ Description: Yerase's TNEF Stream Reader
+ URL: https://github.com/Yeraze/ytnef
+ Version: @VERSION@
+ Libs: -L${libdir} -lytnef
+-Cflags: -I${includedir}
++Cflags: -I${includedir}/libytnef