diff --git a/openc3/python/test/interfaces/test_udp_interface.py b/openc3/python/test/interfaces/test_udp_interface.py
index c93273639b..3d608d4b52 100644
--- a/openc3/python/test/interfaces/test_udp_interface.py
+++ b/openc3/python/test/interfaces/test_udp_interface.py
@@ -11,6 +11,7 @@
 
 import socket
 import threading
+import time
 import unittest
 from unittest.mock import patch