CHANGELOG.md in alba-3.3.0 vs CHANGELOG.md in alba-3.3.1

- old
+ new

@@ -4,9 +4,15 @@
 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]
 
+## [3.3.1] 2024-10-17
+
+### Fixed
+
+- Add ostruct as gemspec dependency to be prepared for ruby 3.3.5. [#386](https://github.com/okuramasafumi/alba/pull/386)
+
 ## [3.3.0] 2024-10-09
 
 ### Added
 
 - Add `ArrayOfString` and `ArrayOfInteger` type [#378](https://github.com/okuramasafumi/alba/pull/378)