diff --git a/rng-tools.spec b/rng-tools.spec
index 4fc4ba624ff44c01c2435b2bf0693b64d59f71a8..71883838fa3f670753d315a705a0a93929a46e8e 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -1,11 +1,12 @@
 Name:            rng-tools
 Version:         6.16
-Release:         2
+Release:         3
 Summary:         Random number generator daemon
 License:         GPLv2+
 URL:             https://github.com/nhorman/rng-tools
 Source0:         https://github.com/nhorman/rng-tools/archive/v%{version}.tar.gz
 Source1:         rngd.service
+Source2:         rngd.sysconfig
 
 #Dependency
 BuildRequires:   gcc make gettext systemd autoconf automake
@@ -37,6 +38,8 @@ and supplies entropy from them to the system kernel's /dev/random machinery.
 %make_install
 
 install -D -t $RPM_BUILD_ROOT%{_unitdir} -m 0644 %{SOURCE1}
+# install sysconfig file
+install -D %{SOURCE2} -m0644 %{buildroot}%{_sysconfdir}/sysconfig/rngd
 
 %check
 export RNGD_JITTER_TIMEOUT=10 #Enseur that the AES can be generated.
@@ -60,13 +63,18 @@ export RNGD_JITTER_TIMEOUT=10 #Enseur that the AES can be generated.
 %{_bindir}/rngtest
 %{_bindir}/randstat
 %{_sbindir}/rngd
-%attr(0644,root,root) %{_unitdir}/rngd.service
+%attr(0644,root,root)    %{_unitdir}/rngd.service
+%config(noreplace) %attr(0644,root,root)    %{_sysconfdir}/sysconfig/rngd
 
 %files help
 %{_mandir}/man1/rngtest.1.*
 %{_mandir}/man8/rngd.8.*
 
 %changelog
+* Mon Apr 24 2023 zhangruifang <zhangruifang1@h-partners.com> - 6.16-3
+- Update the rngd.service file
+- Add the config file for rngd service
+
 * Fri Apr 21 2023 zhangruifang <zhangruifang1@h-partners.com> - 6.16-2
 - enable make check
 
diff --git a/rngd.service b/rngd.service
index 3d9dcb5c250246862546046c70faf387d888d270..189b34c1acd1dfbb0eabdc1fc9466b3017f114b5 100644
--- a/rngd.service
+++ b/rngd.service
@@ -1,8 +1,11 @@
 [Unit]
 Description=Hardware RNG Entropy Gatherer Daemon
 
+# The "-f" option is required for the systemd service rngd to work with Type=simple
 [Service]
-ExecStart=/sbin/rngd -f
+Type=simple
+EnvironmentFile=/etc/sysconfig/rngd
+ExecStart=/usr/sbin/rngd -f $RNGD_ARGS
 
 [Install]
 WantedBy=multi-user.target
diff --git a/rngd.sysconfig b/rngd.sysconfig
new file mode 100644
index 0000000000000000000000000000000000000000..cf18656c465fffb86ff98433831e1878be566117
--- /dev/null
+++ b/rngd.sysconfig
@@ -0,0 +1,3 @@
+# Optional arguments passed to rngd. See rngd(8) and
+# https://bugzilla.redhat.com/show_bug.cgi?id=1252175#c21
+RNGD_ARGS="-O jitter:timeout:10"