lastUpdate Attribute missing in Traccar

I am using Traccar component on Home Assistant 0.102.3. This is what I have in my configuration…

device_tracker:
  - platform: traccar
    host: XXXXXXXXXXX
    port: 8082
    username: !secret traccar_user
    password: !secret traccar_pass
    monitored_conditions: ['totalDistance', 'lastUpdate']

these are the attributes that I see…

2019-12-31_141635

Why is lastUpdate, timestamp or last_seen attribute is not listed there? Is it me only or is it a known issue?