diff --git a/libdap.spec b/libdap.spec
index a29f8c9706748890e9d8a23a31669e3f8e08c539..5cb6035b36cdb2c40fdbc33dc799d1966ff269fc 100644
--- a/libdap.spec
+++ b/libdap.spec
@@ -1,7 +1,7 @@
 %global libdap_tag 3.21.0-27
 Name:          libdap
 Version:       3.21.0.27
-Release:       1
+Release:       2
 Summary:       The C++ DAP2 and DAP4 library from OPeNDAP.
 License:       LGPLv2+
 URL:           http://www.opendap.org/
@@ -25,7 +25,9 @@ BuildRequires: libuuid-devel
 BuildRequires: libxml2-devel
 BuildRequires: openssl-devel
 BuildRequires: pkgconfig
+%ifarch %{valgrind_arches}
 BuildRequires: valgrind
+%endif
 Provides:      bundled(gnulib)
 
 %description
@@ -93,6 +95,9 @@ make check || :
 %{_mandir}/man1/*
 
 %changelog
+* Fri Feb 14 2025 laokz <zhangkai@iscas.ac.cn> - 3.21.0.27-2
+- let BuildRequire valgrind depend on system %{valgrind_arches}
+
 * Mon Mar 11 2024 Dongxing Wang <dongxing.wang_a@thundersoft.com> - 3.21.0.27-1
 - Update package to version 3.21.0.27
   Added libdap::Array::rename_dim() for HK-247