diff --git a/zabbix_sender/sender.py b/zabbix_sender/sender.py
index 9c2d4b3f0369ae75b5517e6e1319d1a1f8842e1e..7e52ac4e9e456e8147ca98f92f407272d4a19d1d 100755
--- a/zabbix_sender/sender.py
+++ b/zabbix_sender/sender.py
@@ -1,6 +1,7 @@
 import struct
 import socket
 import json
+import time
 
 class ZabbixMetrics:
     def __init__(self, host, key, value, clock=None, ns=None):