diff --git a/motif.spec b/motif.spec
index b4d404687ce1e414ac9fcf5e6d27882ceed80559..65f6c59846e529e19ed3be4f51772d4bffdb9bf7 100644
--- a/motif.spec
+++ b/motif.spec
@@ -1,6 +1,6 @@
 Name:          motif
 Version:       2.3.8
-Release:       2
+Release:       3
 Summary:       Run-time libraries and programs
 License:       LGPLv2+
 URL:           https://motif.ics.com/
@@ -41,6 +41,10 @@ This package includes man files for %{name}.
 %prep
 %autosetup -p1
 sed -i 's/-fno-strict-aliasing/-fstack-protector-strong -fno-strict-aliasing/g' configure.ac
+%ifarch riscv64
+%_update_config_guess
+%_update_config_sub
+%endif
 
 %build
 CFLAGS="$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64"
@@ -82,6 +86,9 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/*.la
 %{_mandir}/man*/*
 
 %changelog
+* Wed Jun 28 2023 laokz <zhangkai@iscas.ac.cn> - 2.3.8-3
+- update config.guess and config.sub for riscv64
+
 * Thu Aug 25 2022 Ge Wang <wangge20@h-partners.com> - 2.3.8-2
 - add security compile option -fstack-protector-strong