diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f99321..2397aeb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,11 +9,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.2.10] - 2026-02-07
 
-## [0.2.9] - 2026-02-07
-
 ### Added
-- Automated GitHub release process with workflow_dispatch trigger
-- CHANGELOG.md for tracking release notes
+- Initial public release of rust-animation
+- wgpu-based rendering engine (22.1.0) for cross-platform hardware acceleration
+- Core animation system with keyframe support and multiple easing functions
+- Layer hierarchy system with parent-child relationships
+- Flex layout system using Stretch library for CSS Flexbox-like layouts
+- Text rendering using ab_glyph with TrueType font support
+- Image loading and texture rendering with format auto-detection
+- CoreAnimation-style API for iOS/macOS developer familiarity
+- Multiple examples: ani, coreanimation_api, easing_functions, flex_ui, font_test, picture_viewer
+- Comprehensive documentation (README, MIGRATION guide, RELEASING guide)
+- Automated GitHub workflows for CI, releases, and crates.io publishing
+- Version management script (bump-version.sh) for automated releases
 
 ## [0.2.8] - 2024-XX-XX
 
@@ -37,5 +45,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [Unreleased]: https://github.com/joone/rust-animation/compare/v0.2.10...HEAD
 [0.2.10]: https://github.com/joone/rust-animation/releases/tag/v0.2.10
-[0.2.9]: https://github.com/joone/rust-animation/releases/tag/v0.2.9
 [0.2.8]: https://github.com/joone/rust-animation/releases/tag/v0.2.8