diff --git a/src/doc/rustc/book.toml b/src/doc/rustc/book.toml
index 8adc05c5137..21d127c39c9 100644
--- a/src/doc/rustc/book.toml
+++ b/src/doc/rustc/book.toml
@@ -3,3 +3,6 @@ authors = ["The Rust Project Developers"]
 multilingual = false
 src = "src"
 title = "The rustc book"
+
+[output.html]
+git-repository-url = "https://github.com/rust-lang/rust/tree/master/src/doc/rustc"
diff --git a/src/doc/rustdoc/book.toml b/src/doc/rustdoc/book.toml
index ba30c107667..c2e7ff58906 100644
--- a/src/doc/rustdoc/book.toml
+++ b/src/doc/rustdoc/book.toml
@@ -2,3 +2,6 @@
 authors = ["The Rust Project Developers"]
 src = "src"
 title = "The rustdoc book"
+
+[output.html]
+git-repository-url = "https://github.com/rust-lang/rust/tree/master/src/doc/rustdoc"