diff --git a/perl-xCAT/xCAT/Utils.pm b/perl-xCAT/xCAT/Utils.pm
index 56ecb8bd8..be032cf17 100644
--- a/perl-xCAT/xCAT/Utils.pm
+++ b/perl-xCAT/xCAT/Utils.pm
@@ -23,6 +23,7 @@ use File::Path;
 use Socket;
 use strict;
 use Symbol;
+use Digest::SHA1 qw/sha1/;
 use IPC::Open3;
 use warnings "all";
 require xCAT::InstUtils;