Unable to associate time pattern with minutes.

I want a job to run every 5th minute, like 10:00..10:05..10:10

When I tried the below code, it throws up an assertion error.

schedule.every().minute.at('00:05').do(job)

Currently as a work around, am running it every minute and checking in my code if its the 5th minute of hour. Is there a nicer way to do it via schedule?