diff --git a/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.ppc64el.pkglist b/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
index 80a145e6a..7a080055c 100644
--- a/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
+++ b/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
@@ -12,3 +12,4 @@ rsync
 busybox-static
 gawk
 dnsutils
+chrony
diff --git a/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.x86_64.pkglist b/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.x86_64.pkglist
index 80a145e6a..7a080055c 100644
--- a/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.x86_64.pkglist
+++ b/xCAT-server/share/xcat/install/ubuntu/compute.ubuntu18.04.x86_64.pkglist
@@ -12,3 +12,4 @@ rsync
 busybox-static
 gawk
 dnsutils
+chrony
diff --git a/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.ppc64el.pkglist b/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
index 0d5ea275e..b83d5ffdb 100644
--- a/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
+++ b/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.ppc64el.pkglist
@@ -17,3 +17,4 @@ tar
 gzip
 xz-utils
 cpio
+chrony
diff --git a/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.x86_64.pkglist b/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.x86_64.pkglist
index 0d5ea275e..b83d5ffdb 100644
--- a/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.x86_64.pkglist
+++ b/xCAT-server/share/xcat/netboot/ubuntu/compute.ubuntu18.04.x86_64.pkglist
@@ -17,3 +17,4 @@ tar
 gzip
 xz-utils
 cpio
+chrony