diff --git a/state_machines/enb_acs_manager.py b/state_machines/enb_acs_manager.py
index d8b5947..ba6ae27 100644
--- a/state_machines/enb_acs_manager.py
+++ b/state_machines/enb_acs_manager.py
@@ -3,6 +3,7 @@
 #
 # SPDX-License-Identifier: BSD-3-Clause
 
+import time
 from typing import Any, List, Optional
 
 from common.service import MagmaService