diff --git a/README.md b/README.md
index 699dd26..4b21324 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ Some of this code requires a recent nightly Rust compiler.
 
 ```sh
 rustup update nightly
+git clone https://github.com/rustfoundation/overloading-macros
 cd overloading-macros
 rustup override set nightly
 cargo build