diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4fc9fb9..ed16551 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,21 @@
 ## Change log
 
+### `V0.21.0.20201221`
+
+**请注意，本版本修改了关键的课表查询接口！**  
+
+[fix] Fix the bug when parsing timetable.  
+修复教务系统课表查询界面修改导致的课表无法解析的问题。  
+[fix] Fix exam output format.  
+考试列表里多了一列考场校区，修复了一下输出的格式。  
+[fix] Update requirement version.    
+升级了依赖的版本，但还是建议在虚拟环境中运行。  
+
+**[Known Issue]**  
+Only personal timetable is supported, class timetable cannot be queried temporarily.  
+只支持个人课表，班级课表暂时无法查询。  
+
+
 ### `V0.20.0.20201116`
 
 [feat] Fit the different course time batches for Tianmuhu Campus.   
diff --git a/README.md b/README.md
index f557e03..6105a23 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ NUAA_ClassSchedule
 ---
 ## Version
 
-**V0.20.0.20201116**  
+**V0.21.0.20201221**  
 
 **Change Log:**   
 Please refer to [CHANGELOG](CHANGELOG.md).
diff --git a/settings.py b/settings.py
index 54d66cb..1f8e2ee 100644
--- a/settings.py
+++ b/settings.py
@@ -8,4 +8,4 @@
 
 DEBUG = False
 
-VERSION = "V0.20.0.20201116"
+VERSION = "V0.21.0.20201221"