I'm not usually the guy annoying devs with these sort of questions, but since this mod seems quite abandoned, I wanted to ask if you plan on updating it to the latest MC version.

Thanks again to Cris for the PR, will be out in a second :)
CF => https://www.curseforge.com/minecraft/mc-mods/leaf-decay/files/3511870

I did a quick rebase of the mod for 1.17, check it on pull requests if you are interested (needs to be compiled from source)