diff --git a/CHANGELOG.md b/CHANGELOG.md
index 80a5e6c..f9953aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## [0.4.0] - 2024-07-14
+
 ## Added
 
 - feat: support nested objects and slice pattern #7
diff --git a/package.json b/package.json
index d5948ae..afed964 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "zustand-valtio",
   "description": "A sweet combination of Zustand and Valtio",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "type": "module",
   "author": "Daishi Kato",
   "repository": {