PLEASE, update to 1.21.4

[XiaoGanCN]

Ok, i will update it in a week

Originally posted by @jewtvet in #7 SIX MONTHS ago

Just by looking at your modrinth page, I love this mod so much, even I haven't used it before.
Please, update it.

Class ElytraItem (net/minecraft/class_1770) has been removed since 1.21.2, hope this message can help you in someway