diff --git a/deltarpm.spec b/deltarpm.spec
index e7c8d1854eed48c48593d5131e84c5890550402e..f72fb1173f0b29655f87d6c286a16aa9d41a4d91 100644
--- a/deltarpm.spec
+++ b/deltarpm.spec
@@ -1,13 +1,13 @@
 %bcond_without  python3
 Name:           deltarpm
 Version:        3.6.2
-Release:        5
+Release:        6
 Summary:        deltarpm contains the difference between an old and a new version of an RPM package.
 License:        BSD
 URL:            https://github.com/rpm-software-management/deltarpm
 Source0:        https://github.com/rpm-software-management/deltarpm/archive/3.6.2.tar.gz 
 
-BuildRequires:  gcc bzip2-devel perl-generators xz-devel rpm-devel popt-devel zlib-devel
+BuildRequires:  gcc bzip2-devel perl-generators xz-devel rpm-devel popt-devel zlib-devel zstd-devel
 BuildRequires:  %{_vendor}-rpm-config
 BuildRequires:  python2-devel python3-devel gdb
 
@@ -71,10 +71,10 @@ cd -
 #patch for zlib end
 
 %build
-%make_build  CFLAGS="$RPM_OPT_FLAGS" LDFLAGS="%__global_ldflags" \
+%make_build  CFLAGS="$RPM_OPT_FLAGS -DWITH_ZSTD=1" LDFLAGS="%__global_ldflags" \
              bindir=%{_bindir} libdir=%{_libdir} mandir=%{_mandir} prefix=%{_prefix} \
              zlibbundled='' zlibldflags='-lz' zlibcppflags=''
-%make_build  CFLAGS="$RPM_OPT_FLAGS" LDFLAGS="%__global_ldflags" \
+%make_build  CFLAGS="$RPM_OPT_FLAGS -DWITH_ZSTD=1" LDFLAGS="%__global_ldflags" \
              bindir=%{_bindir} libdir=%{_libdir} mandir=%{_mandir} prefix=%{_prefix} \
              zlibbundled='' zlibldflags='-lz' zlibcppflags='' python
 
@@ -107,6 +107,9 @@ cd -
 %{_bindir}/drpmsync
 
 %changelog
+* Mon Jul 21 2025 Funda Wang <fundawang@yeah.net> - 3.6.2-6
+- enable zstd binary payload support
+
 * Tue Sep 20 2022 zhoushuiqing <zhoushuiqing2@huawei.com> - 3.6.2-5
 - Type:CVE
 - CVE:CVE-2005-1849,CVE-2016-9840,CVE-2016-9841,CVE-2016-9843,CVE-2018-25032,CVE-2022-37434