diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index bf70b28579c8b..2c629ddcd942a 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -837,7 +837,6 @@ impl AtomicBool {
     /// # Examples
     ///
     /// ```rust
-    /// #![feature(atomic_fetch_update)]
     /// use std::sync::atomic::{AtomicBool, Ordering};
     ///
     /// let x = AtomicBool::new(false);
@@ -847,7 +846,7 @@ impl AtomicBool {
     /// assert_eq!(x.load(Ordering::SeqCst), false);
     /// ```
     #[inline]
-    #[unstable(feature = "atomic_fetch_update", reason = "recently added", issue = "78639")]
+    #[stable(feature = "atomic_fetch_update", since = "1.53.0")]
     #[cfg(target_has_atomic = "8")]
     pub fn fetch_update<F>(
         &self,
@@ -1220,7 +1219,6 @@ impl<T> AtomicPtr<T> {
     /// # Examples
     ///
     /// ```rust
-    /// #![feature(atomic_fetch_update)]
     /// use std::sync::atomic::{AtomicPtr, Ordering};
     ///
     /// let ptr: *mut _ = &mut 5;
@@ -1239,7 +1237,7 @@ impl<T> AtomicPtr<T> {
     /// assert_eq!(some_ptr.load(Ordering::SeqCst), new);
     /// ```
     #[inline]
-    #[unstable(feature = "atomic_fetch_update", reason = "recently added", issue = "78639")]
+    #[stable(feature = "atomic_fetch_update", since = "1.53.0")]
     #[cfg(target_has_atomic = "ptr")]
     pub fn fetch_update<F>(
         &self,