diff --git a/libsrtp.spec b/libsrtp.spec
index ba1fddfc4b9a9e4cb6aabeb060ba7f19746d3301..cf956018454c3aec3625500e59360e165b259c10 100644
--- a/libsrtp.spec
+++ b/libsrtp.spec
@@ -1,4 +1,4 @@
-%define anolis_release 2
+%define anolis_release 3
 %global shortname srtp
 
 Name:		libsrtp
@@ -8,21 +8,37 @@ Summary:	An implementation of the Secure Real-time Transport Protocol (SRTP)
 License:	BSD
 URL:		https://github.com/cisco/libsrtp
 Source0:	https://github.com/cisco/libsrtp/archive/v%{version}.tar.gz
-BuildRequires:	gcc, nss-devel, libpcap-devel
-BuildRequires: make
+BuildRequires:  make gcc
+BuildRequires:  nss-devel, libpcap-devel
 
 %description
-This package provides an implementation of the Secure Real-time
-Transport Protocol (SRTP), the Universal Security Transform (UST), and
-a supporting cryptographic kernel.
-
-%package doc
-Summary:        Documentation files for %{name}
-Requires:       %{name} = %{version}-%{release}
-BuildArch:      noarch
-
-%description    doc
-The %{name}-doc package contains documentation files for %{name}.
+LibSRTP is an open-source library that implements the Secure Real-time
+Transport Protocol (SRTP). SRTP is a security protocol that is used to provide
+confidentiality, authentication, and integrity protection for VoIP (Voice over
+IP) streams, video calls, and other real-time media transmissions.
+
+LibSRTP is designed to be a low-level library, providing developers with the
+tools they need to add SRTP security to their applications. It provides support
+for a variety of cryptographic algorithms, including AES, SHA-1, and HMAC-SHA1,
+and can be used with both RTP (Real-time Transport Protocol) and RTCP (Real-time
+Transport Control Protocol) traffic.
+
+LibSRTP is designed to be easy to use, and provides a simple API that developers
+can use to add SRTP support to their applications. It supports both unicast and
+multicast transmission, and provides support for both RTP and RTCP packets.
+
+One of the key advantages of using LibSRTP is that it provides end-to-end
+security for real-time media streams. This means that the media is encrypted at
+the source and decrypted only by the intended recipient, ensuring that it cannot
+be intercepted or manipulated by third parties. This is essential for
+applications that require both privacy and security, such as telemedicine,
+financial services, and government communications.
+
+In summary, LibSRTP is a powerful yet easy-to-use library that provides
+developers with the tools they need to add end-to-end security to real-time
+media streams. Its support for a variety of cryptographic algorithms,
+easy-to-use API, and end-to-end security make it an essential tool for developers
+of VoIP, video conferencing, and other real-time communications applications.
 
 %package devel
 Summary:	Development files for %{name}
@@ -30,7 +46,7 @@ Requires:	%{name} = %{version}-%{release}
 Requires:	pkgconfig
 
 %description devel
-The %{name}-devel package contains libraries and header files for
+This package contains libraries and header files for
 developing applications that use %{name}.
 
 %package tools
@@ -40,10 +56,17 @@ Requires:	%{name} = %{version}-%{release}
 %description tools
 Tools for testing and decoding SRTP
 
+%package doc
+Summary:        Documentation files for %{name}
+Requires:       %{name} = %{EVR}
+BuildArch:      noarch
+
+%description    doc
+The %{name}-doc package contains documentation files for %{name}.
+
 %prep
 %setup -q -n %{name}-%{version}
 
-
 %build
 export CFLAGS="%{optflags} -fPIC"
 %configure --enable-nss
@@ -54,37 +77,38 @@ make install DESTDIR=%{buildroot}
 find %{buildroot} -name '*.la' -exec rm -f {} ';'
 find %{buildroot} -name '*.a' -exec rm -f {} ';'
 
-install -D -p -m 0755 test/rdbx_driver %{buildroot}%{_bindir}/rdbx_driver
-install -D -p -m 0755 test/replay_driver %{buildroot}%{_bindir}/replay_driver
-install -D -p -m 0755 test/roc_driver %{buildroot}%{_bindir}/roc_driver
-install -D -p -m 0755 test/rtp_decoder %{buildroot}%{_bindir}/rtp_decoder
 install -D -p -m 0755 test/rtpw %{buildroot}%{_bindir}/rtpw
-install -D -p -m 0755 test/srtp_driver %{buildroot}%{_bindir}/srtp_driver
 install -D -p -m 0755 test/test_srtp %{buildroot}%{_bindir}/test_srtp
+install -D -p -m 0755 test/roc_driver %{buildroot}%{_bindir}/roc_driver
+install -D -p -m 0755 test/rdbx_driver %{buildroot}%{_bindir}/rdbx_driver
+install -D -p -m 0755 test/srtp_driver %{buildroot}%{_bindir}/srtp_driver
+install -D -p -m 0755 test/rtp_decoder %{buildroot}%{_bindir}/rtp_decoder
+install -D -p -m 0755 test/replay_driver %{buildroot}%{_bindir}/replay_driver
 
 %generate_compatibility_deps
 
-%ldconfig_scriptlets
-
 %files
 %dir %{abidir}
-%license LICENSE
-%{_libdir}/*.so.*
 %{abidir}/*.dump
-
-%files doc
-%doc CHANGES README.md
+%{_libdir}/*.so.*
+%license LICENSE
 
 %files devel
+%{_libdir}/*.so
 %{_includedir}/%{shortname}2/
 %{_libdir}/pkgconfig/libsrtp2.pc
-%{_libdir}/*.so
 
 %files tools
 %{_bindir}/*
 %{abidir}/*-option.list
 
+%files doc
+%doc CHANGES README.md
+
 %changelog
+* Thu Apr 13 2023 Xuchun Shang <xuchun.shang@linux.alibaba.com> - 2.4.2-3
+- Update the description
+
 * Thu Oct 20 2022 mgb01105731 <mgb01105731@alibaba-inc.com> - 2.4.2-2
 - optimise spec file & add doc package