diff --git a/Cargo.toml b/Cargo.toml
index 0ec3f67..58b0515 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "itoa"
-version = "0.3.1"
+version = "0.3.1" # remember to update html_root_url
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Fast functions for printing integer primitives to an io::Write"
diff --git a/src/lib.rs b/src/lib.rs
index 40e952b..b94ae63 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,6 +6,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![doc(html_root_url = "https://docs.rs/itoa/0.3.1")]
+
 use std::{io, mem, ptr, slice};
 
 #[inline]