diff --git a/README.md b/README.md
index 9632be985..649340581 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@ The Wasm-sdk's build process needs some packages :
 * `clang`
 * `ninja`
 * `python3`
+* rust toolchain (`cargo` and dependencies)
 
 Please refer to your OS documentation to install those packages.