diff --git a/CHANGELOG.md b/CHANGELOG.md
index def881a..d354813 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## 0.4.0
+
+> 2024.12.30
+
+- Still WIP.
+
+ADD:
+
+- BadTree widget.
+
 ## 0.3.0
 
 > 2024.12.23
diff --git a/pubspec.yaml b/pubspec.yaml
index 52e0ddd..cfe21ff 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: bad_fl
 description: "A flutter package, including components, implementations, helper functions and extensions. Designed to provide a simple way to develop with flutter."
-version: 0.3.0
+version: 0.4.0
 # publish_to: https://pub.dev # this will cause error when publish ...
 homepage: https://github.com/badlopo/bad_fl
 repository: https://github.com/badlopo/bad_fl