diff --git a/CHANGELOG.md b/CHANGELOG.md
index e38e1a8..7bed0e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@
 - Shuffle `IterableExtension.sample` results.
 - Fix `mergeSort` when the runtime iterable generic is a subtype of the static
   generic.
+- Deprecate `whereNotNull()` from `IterableNullableExtension`. Use `nonNulls`
+  instead - this is an equivalent extension available in Dart core since
+  version 3.0.
 - Require Dart `^3.1.0`
 - Mark "mixin" classes as `mixin`.
 
diff --git a/lib/src/iterable_extensions.dart b/lib/src/iterable_extensions.dart
index 1bf4b3e..0d52fbb 100644
--- a/lib/src/iterable_extensions.dart
+++ b/lib/src/iterable_extensions.dart
@@ -611,6 +611,7 @@ extension IterableNullableExtension<T extends Object> on Iterable<T?> {
   /// of this iterable, in their original iteration order.
   ///
   /// For an `Iterable<X?>`, this method is equivalent to `.whereType<X>()`.
+  @Deprecated('Use .nonNulls instead.')
   Iterable<T> whereNotNull() sync* {
     for (var element in this) {
       if (element != null) yield element;