Other asset creators put the version number in the zip filename, like for example: Farm_Full_v1.01.zip
I buy and download a lot of assets on Itch, and I have a bad memory. So I might not revisit your asset for a few months and I won't be able to remember which version I have at that point. If the filename was 1.01 and you released 1.02 I would know I needed to upgrade.
Just a suggestion!