diff --git a/pkg/js/CHANGELOG.md b/pkg/js/CHANGELOG.md
index f4241715085..8c1f8d3e778 100644
--- a/pkg/js/CHANGELOG.md
+++ b/pkg/js/CHANGELOG.md
@@ -1,10 +1,14 @@
+## 0.6.6-dev
+
+* Add `@JSExport` annotation for exporting Dart classes and `@staticInterop`
+  mocking.
+* Require Dart 2.19
+
 ## 0.6.5
 
 * Populate the pubspec repository field.
 * Add a dependency on `package:meta`.
 * Add an experimental `@trustTypes` annotation.
-* Add `@JSExport` annotation for exporting Dart classes and `@staticInterop`
-  mocking.
 
 ## 0.6.4
 
diff --git a/pkg/js/pubspec.yaml b/pkg/js/pubspec.yaml
index e0f68c8cf01..aa1126caa9b 100644
--- a/pkg/js/pubspec.yaml
+++ b/pkg/js/pubspec.yaml
@@ -1,10 +1,10 @@
 name: js
-version: 0.6.5
+version: 0.6.6-dev
 description: Annotations to create static Dart interfaces for JavaScript APIs.
 repository: https://github.com/dart-lang/sdk/tree/main/pkg/js
 
 environment:
-  sdk: ">=2.16.0-100.0.dev <3.0.0"
+  sdk: ">=2.19.0-333.0.dev <3.0.0"
 
 dependencies:
   meta: ^1.7.0