diff --git a/sysinv/sysinv/sysinv/sysinv/agent/manager.py b/sysinv/sysinv/sysinv/sysinv/agent/manager.py
index a37ca930e4..c2e1d33eff 100644
--- a/sysinv/sysinv/sysinv/sysinv/agent/manager.py
+++ b/sysinv/sysinv/sysinv/sysinv/agent/manager.py
@@ -497,6 +497,7 @@ class AgentManager(service.PeriodicService):
         """ Release the lock guarding apply_network_config.sh """
         if lockfd:
             fcntl.flock(lockfd, fcntl.LOCK_UN)
+            os.close(lockfd)
 
     def ihost_inv_get_and_report(self, icontext):
         """Collect data for an ihost.