diff --git a/xCAT-client/bin/updatenode b/xCAT-client/bin/updatenode
index 277f39f02..e8b7e2431 100755
--- a/xCAT-client/bin/updatenode
+++ b/xCAT-client/bin/updatenode
@@ -95,6 +95,7 @@ if (
                 'P|scripts:s'      => \$::RERUNPS,
                 'k|security'       => \$::SECURITY,
                 'o|os:s'      	   => \$::OS,
+                'fanout=i'         => \$::fanout,
     )
   ) {
     &updatenode_usage();