diff --git a/boost.spec b/boost.spec
index 6db4994ee4495e6d46228cf8a8df4462dfed3d3b..f2b485ef5e94627622b92c6d2e6a638a16856eac 100644
--- a/boost.spec
+++ b/boost.spec
@@ -23,7 +23,7 @@
 
 Name:           boost
 Version:        1.75.0
-Release:        5
+Release:        6
 Summary:        The free peer-reviewed portable C++ source libraries
 License:        Boost Software license V1.0
 URL:            http://www.boost.org
@@ -75,7 +75,7 @@ Requires:       %{name}-type_erasure%{?_isa} = %{version}-%{release}
 Requires:       %{name}-wave%{?_isa} = %{version}-%{release}
 Requires:       %{name}-contract%{?_isa} = %{version}-%{release}
 
-BuildRequires:  gcc-c++ m4 tcl
+BuildRequires:  gcc-c++ m4
 BuildRequires:  libstdc++-devel bzip2-devel zlib-devel libicu-devel
 %if %{with python3}
 BuildRequires:  python3-devel python3-numpy
@@ -1144,6 +1144,9 @@ fi
 %{_mandir}/man1/bjam.1*
 
 %changelog
+* Sat Jul 24 2021 Liu Zixian <liuzixian4@huawei.com> - 1.75.0-6
+- remove needless BuildRequires
+
 * Fri Jul 23 2021 zhouwenpei <zhouwenpei1@huawei.com> - 1.75.0-5
 - remove useless buildrequires