This mod fixes a bug where using a Riptide trident while wearing Depth Strider boots causes extreme drag in water.
I updated the mod to work with 1.21.5!
Update: I tested it and it works without any modifications for 1.21.6, 1.21.7, 1.21.8, 1.21.9, and 1.21.10 as well.
The first version of this mod, for Minecraft 1.21.4.