diff --git a/gssproxy.spec b/gssproxy.spec
index 05e3d2d0dc9ceaee6f225f4f0c08c22a01fe6476..4e8675139aafa78f7804436edf62d35a76ef9e26 100644
--- a/gssproxy.spec
+++ b/gssproxy.spec
@@ -4,7 +4,7 @@
 
 Name:		gssproxy
 Version:	0.9.1
-Release:	1
+Release:	2
 Summary:	GSSAPI Proxy
 License:	MIT
 URL:		https://github.com/gssapi/gssproxy
@@ -22,6 +22,8 @@ Conflicts: selinux-policy < 3.13.1-283.5
 
 BuildRequires: autoconf automake libtool m4 libxslt libxml2 docbook-style-xsl doxygen findutils systemd-units git popt-devel
 BuildRequires: gettext-devel pkgconfig krb5-devel >= 1.12.0 libselinux-devel keyutils-libs-devel libini_config-devel >= 1.2.0 libverto-devel
+# for gssuserproxy.service --idle-timeout
+BuildRequires: systemd-devel
 
 %description
 This is a proxy for GSSAPI which deals with credential handling
@@ -89,6 +91,9 @@ mkdir -p %{buildroot}%{gpstatedir}/rcache
 %{_mandir}/man8/gssproxy-mech.8*
 
 %changelog
+* Mon Apr 10 2023 yixiangzhike <yixiangzhike007@163.com> - 0.9.1-2
+- add BuildRequires:systemd-devel for option idle-timeout
+
 * Mon Oct 24 2022 yixiangzhike <yixiangzhike007@163.com> - 0.9.1-1
 - update to 0.9.1