diff --git a/ntp.spec b/ntp.spec
index 2fa61f8f7e95ab54b8fa5d6c0e0fa68560458392..a68c2d7c26829210fefaab010c52ff316392715a 100644
--- a/ntp.spec
+++ b/ntp.spec
@@ -2,7 +2,7 @@
 
 Name:                  ntp
 Version:               4.2.8p15
-Release:               10
+Release:               11
 Summary:               A protocol designed to synchronize the clocks of computers over a network
 License:               MIT and BSD and BSD with advertising
 URL:                   https://www.ntp.org/
@@ -211,6 +211,12 @@ make check
 %{_mandir}/man8/*.8*
 
 %changelog
+* Thu Nov 23 2023 chengyechun <chengyechun1@huawei.com> - 4.2.8p15-11
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:update ntpd.service
+
 * Wed Jun 21 2023 chengyechun <chengyechun1@huawei.com> - 4.2.8p15-10
 - Type:bugfix
 - ID:
diff --git a/ntpd.service b/ntpd.service
index 22e39fee55138597573363b37b724f42344d30a1..61dee04c70ab0cdab3606a54ea3a4bf0ff35776d 100644
--- a/ntpd.service
+++ b/ntpd.service
@@ -1,7 +1,7 @@
 [Unit]
 Description=Network Time Service
 After=syslog.target ntpdate.service sntp.service
-Conflicts=systemd-timesyncd.service chronyd.service
+Conflicts=chronyd.service systemd-timesyncd.service
 
 [Service]
 Type=forking