diff --git a/README.md b/README.md
index 636af6b..bfb66db 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 https://github.com/Eein/octopath-traveler-autosplitter-wasm/releases/latest/download/octopath_traveler_autosplitter_wasm.wasm
 
 ## build
-1. install rustup https://rustup.rs/
+1. install rustup + stable rust https://rustup.rs/
 2. install wasm target
   - `rustup target add wasm32-unknown-unknown`
 3. build wasm file (--release optional)