diff --git a/README.md b/README.md
index d6e188e..2da8193 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,9 @@ satisfy Rust requirements
 ```sh
 cd ../mission_rust
 cargo update 
-cargo default nightly
+rustup toolchain install nightly
+rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
+rustup override set default nightly
 cargo build -Z build-std
 ```