diff --git a/xCAT-server/share/xcat/netboot/sles/compute.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.pkglist
index c14563b80..05bfaa5b3 100644
--- a/xCAT-server/share/xcat/netboot/sles/compute.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/compute.pkglist
@@ -10,3 +10,4 @@ resmgr
 wget
 rsync
 timezone
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sles10.ppc64.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sles10.ppc64.pkglist
index ec12d36af..3030207bd 100644
--- a/xCAT-server/share/xcat/netboot/sles/compute.sles10.ppc64.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/compute.sles10.ppc64.pkglist
@@ -25,3 +25,4 @@ bc
 powerpc-utils
 timezone
 iputils
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sles11.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sles11.pkglist
index c2ad0aa54..422d2c866 100644
--- a/xCAT-server/share/xcat/netboot/sles/compute.sles11.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/compute.sles11.pkglist
@@ -16,3 +16,4 @@ vim
 rsync
 timezone
 bc
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sles11.ppc64.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sles11.ppc64.pkglist
index 1cc9336d9..a1fbff957 100644
--- a/xCAT-server/share/xcat/netboot/sles/compute.sles11.ppc64.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/compute.sles11.ppc64.pkglist
@@ -18,3 +18,4 @@ iputils
 lsvpd
 irqbalance
 procps
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sles11.s390x.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sles11.s390x.pkglist
index de9ffb141..d626927e4 100644
--- a/xCAT-server/share/xcat/netboot/sles/compute.sles11.s390x.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/compute.sles11.s390x.pkglist
@@ -25,4 +25,5 @@ libzio
 s390-32
 s390-tools
 mdadm
-udev
\ No newline at end of file
+udev
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/service.pkglist b/xCAT-server/share/xcat/netboot/sles/service.pkglist
index 557840fdf..768ea3a64 100644
--- a/xCAT-server/share/xcat/netboot/sles/service.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/service.pkglist
@@ -19,3 +19,4 @@ wget
 vsftpd
 rsync
 timezone
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/service.sles10.ppc64.pkglist b/xCAT-server/share/xcat/netboot/sles/service.sles10.ppc64.pkglist
index 4c41c9106..1bd102e81 100644
--- a/xCAT-server/share/xcat/netboot/sles/service.sles10.ppc64.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/service.sles10.ppc64.pkglist
@@ -49,3 +49,4 @@ rsync
 powerpc-utils
 bc
 iputils
+ntp
diff --git a/xCAT-server/share/xcat/netboot/sles/service.sles11.pkglist b/xCAT-server/share/xcat/netboot/sles/service.sles11.pkglist
index 030914d7b..219f5edd8 100644
--- a/xCAT-server/share/xcat/netboot/sles/service.sles11.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/service.sles11.pkglist
@@ -40,6 +40,7 @@ unixODBC
 perl-DBD-mysql
 mysql-client
 libmysqlclient15
+ntp
 #   The following rpms are available on the SLES SDK
 #   You will need to locate and make these rpms available in your zypper
 #   repository for service node installs and uncomment the following lines:
diff --git a/xCAT-server/share/xcat/netboot/sles/service.sles11.ppc64.pkglist b/xCAT-server/share/xcat/netboot/sles/service.sles11.ppc64.pkglist
index 88ae9ccc8..f10b610c2 100644
--- a/xCAT-server/share/xcat/netboot/sles/service.sles11.ppc64.pkglist
+++ b/xCAT-server/share/xcat/netboot/sles/service.sles11.ppc64.pkglist
@@ -46,6 +46,7 @@ libmysqlclient15
 lsvpd
 irqbalance
 procps
+ntp
 #   The following rpms are available on the SLES SDK
 #   You will need to locate and make these rpms available in your zypper
 #   repository for service node installs