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diff --git a/UpdateLog/update_log.md b/UpdateLog/update_log.md
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+++ b/UpdateLog/update_log.md
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 **简体中文 | [English](https://github.com/zhongyang219/MusicPlayer2/blob/master/UpdateLog/update_log_en-us.md)**<br>
 # MusicPlayer2 更新日志
+## V2.66 (2019/08/03)
+* 新增播放列表功能，可自由创建和编辑播放列表。
+* 新增歌曲红心的功能。
+* 修正部分flac音频标签获取不正确的问题。
+* 新增文件关联功能。
+* 修正窗口大小改变时会导致GDI句柄泄漏的问题。
+* 新增声音淡入淡出效果。
+* 修正了一些bug。
+* 其他细节方面的改进。
 ## V2.65 (2019/05/25)
 * 新增在搜索框显示频谱分析的功能
 * 新增累计听歌时间统计的功能
diff --git a/UpdateLog/update_log_en-us.md b/UpdateLog/update_log_en-us.md
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--- a/UpdateLog/update_log_en-us.md
+++ b/UpdateLog/update_log_en-us.md
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 **[简体中文](https://github.com/zhongyang219/MusicPlayer2/blob/master/UpdateLog/update_log.md) | English**<br>
 # MusicPlayer2 Update log
+## V2.66 (2019/08/03)
+* Add the playlist function, you can freely create and edit playlists.
+* Add the function of song red heart.
+* Fixed the problem that some flac audio tags were incorrectly obtained.
+* Add the function of file association.
+* Fixed the problem that the GDI handle leaked when the window size changed.
+* Add the sound fade effect.
+* Fixed some bugs.
+* Improved in other details.
 ## V2.65 (2019/05/25)
 * Add the function to display spectrum analysis in the search box.
 * Add the function of accumulating listening time statistics.