S3DirectField has varchar limit of 100 , how can i extend that?

[pdf9]

I'm getting an error where it says i'm exceeding the 100 character limit (only once i push to heroku, not in local). I tested and did find that if i reduced my file name and folder key so the total url was <100 i didn't get the error. Now i just need help adjusting the that limit out. Or I guess I could create a new bucked with smaller name lol.