diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8dcbdba..df3b4a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [2.4.0] - 2026-08-09
 
 ### Added
 
diff --git a/ViewMonitor.podspec b/ViewMonitor.podspec
index 2c0b4e2..3f63ac8 100644
--- a/ViewMonitor.podspec
+++ b/ViewMonitor.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "ViewMonitor"
-  s.version          = "2.3.0"
+  s.version          = "2.4.0"
   s.summary          = "view detail monitor"
   s.description      = <<-DESC
                        You can measure view detail.