diff --git a/rpm.spec b/rpm.spec
index be4a3cf..cbb0ccc 100644
--- a/rpm.spec
+++ b/rpm.spec
@@ -1,6 +1,6 @@
 Name:          rpm
 Version:       4.15.1
-Release:       26
+Release:       27
 Summary:       RPM Package Manager
 License:       GPLv2+
 URL:           http://www.rpm.org/
@@ -58,8 +58,8 @@ BuildRequires: gcc autoconf automake libtool make gawk popt-devel openssl-devel
 BuildRequires: zlib-devel libzstd-devel xz-devel bzip2-devel libarchive-devel ima-evm-utils-devel
 BuildRequires: dbus-devel fakechroot elfutils-devel elfutils-libelf-devel ima-evm-utils
 BuildRequires: lua-devel libcap-devel libacl-devel libselinux-devel file-devel gettext-devel ncurses-devel
-BuildRequires: system-rpm-config gdb dwz
-Requires:      coreutils popt curl zstd libcap gnupg2 crontabs logrotate libdb-utils
+BuildRequires: system-rpm-config gdb dwz gnupg2
+Requires:      coreutils popt curl zstd libcap crontabs logrotate libdb-utils
 Obsoletes:     %{name}-build-libs %{name}-sign-libs %{name}-sign %{name}-cron
 Provides:      %{name}-build-libs %{name}-sign-libs %{name}-sign %{name}-cron
 Obsoletes:     %{name}-plugin-selinux %{name}-plugin-syslog %{name}-plugin-systemd-inhibit %{name}-plugin-ima %{name}-plugin-prioreset
@@ -85,8 +85,7 @@ Summary:     Scripts and executable programs used to build packages
 Requires:    %{name} = %{version}-%{release}
 Requires:    elfutils binutils findutils sed grep gawk diffutils file patch
 Requires:    tar unzip gzip bzip2 cpio xz zstd pkgconfig system-rpm-config
-Requires:    gcc-c++ autoconf automake binutils gcc gdbm gettext glibc
-Requires:    gdb-headless ncurses perl make git chrpath
+Requires:    gdb-headless
 
 %description build
 This package provides scripts and executable programs that used to
@@ -302,6 +301,12 @@ make check || (cat tests/rpmtests.log; exit 0)
 %{_mandir}/man1/gendiff.1*
 
 %changelog
+* Thu Jul 08 2021 shixuantong <shixuantong@huawei.com> - 4.15.1-27
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:remove unnecessary installation dependencies
+
 * Mon Jun 28 2021 shangyibin <shangyibin1@huawei.com> - 4.15.1-26
 - Type:bugfix
 - ID:NA