diff --git a/README.md b/README.md
index 0f2c3738..deae0867 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ This is a fork of the ultrasm64 repo by CrashOveride which includes the followin
 - Widescreen (16:9) support toggleable by pressing `L` in the pause menu. *
 - S2DEX engine by someone2639! To use it, compile with `make TEXT_ENGINE=s2dex_text_engine` or just set `TEXT_ENGINE` to `s2dex_text_engine` in the makefile.
 - ia8 coins (64x64), the vanilla coin texture is upgraded to accomodate.
+- Skybox size modifier. You can have 2x, 3x and 4x size skyboxes (you can select the skybox size in `config.h`.) Please note that this might heavily affect console performance. By CowQuack
 
 # UltraSM64