diff --git a/src/doc/unstable-book/book.toml b/src/doc/unstable-book/book.toml
index 5b2e19bd7aa78..0cd56d0940451 100644
--- a/src/doc/unstable-book/book.toml
+++ b/src/doc/unstable-book/book.toml
@@ -1,3 +1,6 @@
 [book]
 title = "The Rust Unstable Book"
 author = "The Rust Community"
+
+[output.html]
+git-repository-url = "https://github.com/rust-lang/rust/tree/master/src/doc/unstable-book"