diff --git a/CHANGELOG.en-US.md b/CHANGELOG.en-US.md
index 3127a17dd7..75ee403c2e 100644
--- a/CHANGELOG.en-US.md
+++ b/CHANGELOG.en-US.md
@@ -15,6 +15,13 @@ timeline: true
 
 ---
 
+## 4.9.1
+
+`2020-12-01`
+
+- TypeScript
+  - 🤖 Fix Collapse.Panel `collapsible` property to optional. [#28092](https://github.com/ant-design/ant-design/pull/28092) [@sammarks](https://github.com/sammarks)
+
 ## 4.9.0
 
 `2020-11-30`
diff --git a/CHANGELOG.zh-CN.md b/CHANGELOG.zh-CN.md
index 27969b0020..0ee61d66bd 100644
--- a/CHANGELOG.zh-CN.md
+++ b/CHANGELOG.zh-CN.md
@@ -15,6 +15,13 @@ timeline: true
 
 ---
 
+## 4.9.1
+
+`2020-12-01`
+
+- TypeScript
+  - 🤖 修复 Collapse.Panel 可折叠属性 `collapsible` 为可选。[#28092](https://github.com/ant-design/ant-design/pull/28092) [@sammarks](https://github.com/sammarks)
+
 ## 4.9.0
 
 `2020-11-30`
diff --git a/package.json b/package.json
index 584c14e2f7..4e5bf7188b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "antd",
-  "version": "4.9.0",
+  "version": "4.9.1",
   "description": "An enterprise-class UI design language and React components implementation",
   "title": "Ant Design",
   "keywords": [