diff --git a/rng-tools.spec b/rng-tools.spec
index cc6f5a6..10ee2b2 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -1,16 +1,21 @@
 Name:            rng-tools
-Version:         6.14
-Release:         5
+Version:         6.16
+Release:         1
 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
-BuildRequires:   libgcrypt-devel libcurl-devel libxml2-devel openssl-devel
+BuildRequires:   libgcrypt-devel libcurl-devel libxml2-devel openssl-devel libcap-devel
 BuildRequires:   jansson-devel jitterentropy-library-devel
+
+#Provide the command: killall used by test cases.
+BuildRequires:   psmisc
+
 Requires:        libgcrypt libsysfs openssl libxml2 libcurl jitterentropy-library
 %{?systemd_requires}
 
@@ -32,9 +37,12 @@ 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
-%make_build check
+export RNGD_JITTER_TIMEOUT=10 #Enseur that the AES can be generated.
+%make_build check 
 
 %pre
 
@@ -55,12 +63,18 @@ install -D -t $RPM_BUILD_ROOT%{_unitdir} -m 0644 %{SOURCE1}
 %{_bindir}/randstat
 %{_sbindir}/rngd
 %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
+* Wed Oct 18 2023 zhangruifang <zhangruifang1@h-partners.com> - 6.16-1
+- update version to 6.16
+- update the rngd.service file
+- add the config file for rngd service
+
 * Fri Mar 31 2023 fuanan <fuanan3@h-partners.com> - 6.14-5
 - enable make check
 
diff --git a/rngd.service b/rngd.service
index 3d9dcb5..189b34c 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 0000000..cf18656
--- /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"
diff --git a/v6.14.tar.gz b/v6.14.tar.gz
deleted file mode 100644
index 1b30a34..0000000
Binary files a/v6.14.tar.gz and /dev/null differ
diff --git a/v6.16.tar.gz b/v6.16.tar.gz
new file mode 100644
index 0000000..b00338c
Binary files /dev/null and b/v6.16.tar.gz differ