Can I create a random number in an SSIS derived column

I have a task where I am trying to assign a random PIN to an account. I have SQL code that will generate a random integer between 1000 and 9999. I was wondering if I could put that in a Derived Column task in SSIS and not do it in the source data? Also, I can probably write a Script Task to accomplish this. At this point it's more an exercise to see if it's possible since I have alternatives.