diff --git a/README.md b/README.md
index 8a37c7b..3337fd6 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ nanoseconds and does not represent "nominal" components such as days or
 months.
 
 Chrono does not yet natively support
-the standard [`Duration`](https://docs.rs/time/0.1.40/time/struct.Duration.html) type,
+the standard [`Duration`](https://doc.rust-lang.org/std/time/struct.Duration.html) type,
 but it will be supported in the future.
 Meanwhile you can convert between two types with
 [`Duration::from_std`](https://docs.rs/time/0.1.40/time/struct.Duration.html#method.from_std)
diff --git a/src/lib.rs b/src/lib.rs
index 1f149ed..309da53 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -66,7 +66,7 @@
 //! months.
 //!
 //! Chrono does not yet natively support
-//! the standard [`Duration`](https://docs.rs/time/0.1.40/time/struct.Duration.html) type,
+//! the standard [`Duration`](https://doc.rust-lang.org/std/time/struct.Duration.html) type,
 //! but it will be supported in the future.
 //! Meanwhile you can convert between two types with
 //! [`Duration::from_std`](https://docs.rs/time/0.1.40/time/struct.Duration.html#method.from_std)