diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f15812..a55ee92 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,58 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v0.5.0-alpha] - 2026-01-29
+
+### Added
+
+- **Reminder Features (P4)**
+  - Reminder grouping by time (today/tomorrow/this week/later/missed)
+  - Overdue reminders displayed in red Alert box
+  - Reminder cards with hover effects and quick actions
+  - Complete checkbox functionality
+  - Edit/Delete menu options
+
+- **Components**
+  - `ReminderList` -分组列表组件
+  - `ReminderCard` - 提醒卡片组件
+
+### Fixed
+
+- DateInput component type handling (string to Date conversion)
+
+### Technical
+
+- Time-based grouping logic with useMemo optimization
+- Color-coded cards based on status (completed/overdue/today/future)
+- Smooth hover animations and transitions
+
+## [v0.4.0-alpha] - 2026-01-29
+
+### Added
+
+- **Anniversary Features (P3)**
+  - Anniversary CRUD operations
+  - Countdown calculation (yearly/monthly/none repeat)
+  - Lunar date support
+  - Built-in holidays display
+  - Holiday countdown display
+
+- **Components**
+  - `AnniversaryList` - 纪念日列表组件
+  - `AnniversaryCard` - 纪念日卡片组件
+
+- **Utilities**
+  - `countdown.ts` - 倒计时计算工具
+  - `holidays.ts` - 内置节假日数据
+  - Lunar-javascript integration for Chinese lunar dates
+
+### Fixed
+
+- Lunar date conversion edge cases
+- Leap year February 29 handling
+- Month-end date overflow handling
+- Holiday is_lunar flag configuration
+
 ## [v0.2.0-alpha] - 2026-01-29
 
 ### Added
@@ -59,6 +111,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Prisma ORM setup
 - Initial database schema
 
-[Unreleased]: https://github.com/your-repo/compare/v0.2.0-alpha...HEAD
+[Unreleased]: https://github.com/your-repo/compare/v0.5.0-alpha...HEAD
+[v0.5.0-alpha]: https://github.com/your-repo/releases/tag/v0.5.0-alpha
+[v0.4.0-alpha]: https://github.com/your-repo/releases/tag/v0.4.0-alpha
 [v0.2.0-alpha]: https://github.com/your-repo/releases/tag/v0.2.0-alpha
 [v0.1.0-alpha]: https://github.com/your-repo/releases/tag/v0.1.0-alpha