Can you bounce thin servers instead of restarting them all at once?

Can you bounce thin servers instead of restarting them all at once?

This sucks:
$ thin restart -p 4000 -s 3 -d;
Stopping server on 0.0.0.0:4000 ...
Sending QUIT signal to process 13375 ...
>> Exiting!
Stopping server on 0.0.0.0:4001 ...
Sending QUIT signal to process 13385 ...
>> Exiting!
Stopping server on 0.0.0.0:4002 ...
Sending QUIT signal to process 13397 ...
>> Exiting!
Starting server on 0.0.0.0:4000 ...
Starting server on 0.0.0.0:4001 ...
Starting server on 0.0.0.0:4002 ...
Is there a way to cycle through each server and restart one at a time?