diff --git a/CHANGES_en.md b/CHANGES_en.md
index 91344460..606055ca 100644
--- a/CHANGES_en.md
+++ b/CHANGES_en.md
@@ -1,5 +1,22 @@
 # Change Log
 
+### 2.9.0 - 2021-01-08
+
+#### Breaking Changes 📣
+
+- Upgrade Cesium to version 1.89.0
+
+#### Additions 🎉
+
+- Added protocol parameter settings when creating partial map tiles
+- Add partial tool class name abbreviations
+
+#### Fixes 🔧
+
+- Solve the problem that right click menu content is still displayed when empty
+- Fix overlay style setting overlay issue
+- Solve the problem that some overlay setting labels are invalid
+
 ### 2.8.0 - 2021-12-04
 
 #### Breaking Changes 📣
diff --git a/CHANGES_zh.md b/CHANGES_zh.md
index 97542d22..5654c9af 100644
--- a/CHANGES_zh.md
+++ b/CHANGES_zh.md
@@ -1,5 +1,22 @@
 # Change Log
 
+### 2.9.0 - 2021-01-08
+
+#### Breaking Changes 📣
+
+- 升级 Cesium 到 1.89.0 版本
+
+#### Additions 🎉
+
+- 添加 protocol 参数设置当创建部分地图瓦片
+- 添加部分工具类添加类名简写
+
+#### Fixes 🔧
+
+- 解决右击菜单内容为空依旧显示的问题
+- 解决覆盖物样式设置覆盖问题
+- 解决部分覆盖物设置标签无效的问题
+
 ### 2.8.0 - 2021-12-04
 
 #### Breaking Changes 📣