Number of digits in folder numeric prefix?

I’ve imported my existing blog content into Grav, and there are more than 100 posts already in there. The old blog posts were imported with numeric prefixes which are 3 digits in length.

For my new posts, Grav uses 2-digit prefixes, which clashes with the ordering of the posts. I.e. I have folders named:

  • 009-something
  • 01.something-new
  • 010-something-old

where the middle one in this example was created by Grav.

Is there a way I can tell Grav how many digits to use for the prefix?