diff --git a/src/doc/trpl/README.md b/src/doc/trpl/README.md
index 119bbf7fb2a84..89f0db8dc56f3 100644
--- a/src/doc/trpl/README.md
+++ b/src/doc/trpl/README.md
@@ -40,6 +40,11 @@ want to dive in with a project, or ‘Syntax and Semantics’ if you prefer to
 start small, and learn a single concept thoroughly before moving onto the next.
 Copious cross-linking connects these parts together.
 
+### Contributing
+
+The source files from which this book is generated can be found on Github:
+[github.com/rust-lang/rust/tree/master/src/doc/trpl](https://github.com/rust-lang/rust/tree/master/src/doc/trpl)
+
 ## A brief introduction to Rust
 
 Is Rust a language you might be interested in? Let’s examine a few small code