diff --git a/test/towerops/workers/device_monitor_worker_test.exs b/test/towerops/workers/device_monitor_worker_test.exs
index 8f01b8f0..78f8f9c8 100644
--- a/test/towerops/workers/device_monitor_worker_test.exs
+++ b/test/towerops/workers/device_monitor_worker_test.exs
@@ -47,7 +47,8 @@ defmodule Towerops.Workers.DeviceMonitorWorkerTest do
 
       # Calculate the delay (scheduled_at - inserted_at)
       delay_seconds = DateTime.diff(job.scheduled_at, job.inserted_at, :second)
-      assert delay_seconds == expected_offset
+      # Allow 1 second tolerance for timing variations during test execution
+      assert delay_seconds in (expected_offset - 1)..(expected_offset + 1)
     end
 
     test "offset is within monitor interval bounds", %{site: site} do