diff --git a/kernel-rs/README.md b/kernel-rs/README.md
index f68da820..b6eb0cce 100644
--- a/kernel-rs/README.md
+++ b/kernel-rs/README.md
@@ -16,6 +16,7 @@ on archlinux `pacman -S make grub2 xorriso mtools binutils gcc qemu`
 
 ```
 pacman -S rustup
+rustup override add nightly
 rustup component add rust-src
 cargo install xargo
 ```