diff --git a/core/benches/lib.rs b/core/benches/lib.rs
index 3f1c58bbd7204..32d15c386cb1b 100644
--- a/core/benches/lib.rs
+++ b/core/benches/lib.rs
@@ -8,7 +8,6 @@
 #![feature(iter_array_chunks)]
 #![feature(iter_next_chunk)]
 #![feature(iter_advance_by)]
-#![feature(isqrt)]
 
 extern crate test;
 
diff --git a/core/src/lib.rs b/core/src/lib.rs
index dfd9e722468dc..74f79059fe4e0 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -150,7 +150,6 @@
 #![feature(ip)]
 #![feature(is_ascii_octdigit)]
 #![feature(is_val_statically_known)]
-#![feature(isqrt)]
 #![feature(lazy_get)]
 #![feature(link_cfg)]
 #![feature(non_null_from_ref)]
diff --git a/core/src/num/int_macros.rs b/core/src/num/int_macros.rs
index 01ecaf2710ff6..3a9060df286e8 100644
--- a/core/src/num/int_macros.rs
+++ b/core/src/num/int_macros.rs
@@ -1629,11 +1629,10 @@ macro_rules! int_impl {
         ///
         /// Basic usage:
         /// ```
-        /// #![feature(isqrt)]
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".checked_isqrt(), Some(3));")]
         /// ```
-        #[unstable(feature = "isqrt", issue = "116226")]
-        #[rustc_const_unstable(feature = "isqrt", issue = "116226")]
+        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
@@ -2880,11 +2879,10 @@ macro_rules! int_impl {
         ///
         /// Basic usage:
         /// ```
-        /// #![feature(isqrt)]
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".isqrt(), 3);")]
         /// ```
-        #[unstable(feature = "isqrt", issue = "116226")]
-        #[rustc_const_unstable(feature = "isqrt", issue = "116226")]
+        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
diff --git a/core/src/num/nonzero.rs b/core/src/num/nonzero.rs
index fdb84827e273c..f6e271954fe12 100644
--- a/core/src/num/nonzero.rs
+++ b/core/src/num/nonzero.rs
@@ -1527,7 +1527,6 @@ macro_rules! nonzero_integer_signedness_dependent_methods {
         ///
         /// Basic usage:
         /// ```
-        /// #![feature(isqrt)]
         /// # use std::num::NonZero;
         /// #
         /// # fn main() { test().unwrap(); }
@@ -1539,8 +1538,8 @@ macro_rules! nonzero_integer_signedness_dependent_methods {
         /// # Some(())
         /// # }
         /// ```
-        #[unstable(feature = "isqrt", issue = "116226")]
-        #[rustc_const_unstable(feature = "isqrt", issue = "116226")]
+        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
diff --git a/core/src/num/uint_macros.rs b/core/src/num/uint_macros.rs
index 9c5fe563d9306..eb4ea4b3c4067 100644
--- a/core/src/num/uint_macros.rs
+++ b/core/src/num/uint_macros.rs
@@ -2753,11 +2753,10 @@ macro_rules! uint_impl {
         ///
         /// Basic usage:
         /// ```
-        /// #![feature(isqrt)]
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".isqrt(), 3);")]
         /// ```
-        #[unstable(feature = "isqrt", issue = "116226")]
-        #[rustc_const_unstable(feature = "isqrt", issue = "116226")]
+        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
diff --git a/core/tests/lib.rs b/core/tests/lib.rs
index 8c89871886557..2a9f1660a629e 100644
--- a/core/tests/lib.rs
+++ b/core/tests/lib.rs
@@ -53,7 +53,6 @@
 #![feature(ip)]
 #![feature(ip_from)]
 #![feature(is_ascii_octdigit)]
-#![feature(isqrt)]
 #![feature(iter_advance_by)]
 #![feature(iter_array_chunks)]
 #![feature(iter_chain)]