bump version to 0.4.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b1d9e0..bba588f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## unreleased
+## 0.4.1
  * Added support for observing field changes.
    For now, this can only be enabled by using a mixin to override
    the eventPlugin getter.
diff --git a/pubspec.yaml b/pubspec.yaml
index e3eb936..b59fe9b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: protobuf
-version: 0.4.0
+version: 0.4.1
 author: Dart Team <misc@dartlang.org>
 description: Runtime library for protobuf support.
 homepage: https://github.com/dart-lang/dart-protobuf