diff --git a/lib/tasks/change_site_server_name.rake b/lib/tasks/change_site_server_name.rake
index 254fa37..fc0a40a 100644
--- a/lib/tasks/change_site_server_name.rake
+++ b/lib/tasks/change_site_server_name.rake
@@ -12,8 +12,8 @@ namespace :create_site do
           nginx_file_content = exec_command_by_user(ssh,"cat #{site_construct.nginx_file}")
           nginx_file_content = nginx_file_content.gsub(/^[ \t]*server_name[ \t]+.*;/,"  server_name #{args.server_name};").gsub('$','\$')
           puts nginx_file_content
-          cmd = "sh -c \"echo '#{nginx_file_content}' > #{site_construct.nginx_file}\""
-          exec_ssh_command_by_sudo(ssh,cmd)
+          cmd = "x='#{nginx_file_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{site_construct.nginx_file}\""
+          exec_command_by_user(ssh,cmd)
           exec_ssh_command_by_sudo(ssh,"service nginx restart")
         end
         site_construct.update_attributes(domain_name: args.server_name)