diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9bd7c2..52f77b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 2.1.1
+
+* **DISCONTINUE PACKAGE**
+  This package is no longer maintained by the Dart team.
+* Make `IsolateRunner.close` not hang if called more than once.
+
 ## 2.1.0
 
 * Migrate to null safety.
diff --git a/pubspec.yaml b/pubspec.yaml
index a1ca11f..6e80834 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: isolate
-version: 2.1.0
+version: 2.1.1
 author: Dart Team <misc@dartlang.org>
 description: >-
   Utility functions and classes related to the 'dart:isolate' library.