diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 1eedae23..d62285cb 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,6 +24,10 @@ Otherwise if you have a local checkout of Wasmtime you can symlink its
 `libwasmtime.so` (or equivalent) to `wasmtime/linux-x86_64/_libwasmtime.so` (or
 equivalent).
 
+```
+cargo install wasm-tools
+```
+
 Next the bindings generation requires compiling some Rust code to WebAssembly,
 which can be done with: