How to update User Titles and Ranks automatically?

[xash]

Ranks are not updating automatically for my users. Is there a way to automatically update user titles and ranks? I don't want to manually run Admin CP > Maintenance > Update Counters > Update User Titles and Ranks each time.

Does anyone know if this can be run as a cron job or any mod that does this?

I'm currently using vB 3.7.3. Do other versions of vBulletin have the capability to run this automatically? How about vB 3.8.4 or vB 4.0.2?

I searched both vBulletin.com and vBulletin.org, but the only responses to "ranks are not updating" seem to be "then run Admin CP > Maintenance > Update Counters > Update User Titles and Ranks". I'm looking for a way to do this automatically.

Thanks.