diff --git a/CHANGELOG.en-US.md b/CHANGELOG.en-US.md
index af6421ceb9..f88d827015 100644
--- a/CHANGELOG.en-US.md
+++ b/CHANGELOG.en-US.md
@@ -15,6 +15,12 @@ timeline: true
 
 ---
 
+## 3.21.4
+
+`2019-08-09`
+
+- 🐞 Fix the problem that Dropdown.Button requires `title` props.
+
 ## 3.21.3
 
 `2019-08-09`
diff --git a/CHANGELOG.zh-CN.md b/CHANGELOG.zh-CN.md
index 0cec1e8147..172fe28872 100644
--- a/CHANGELOG.zh-CN.md
+++ b/CHANGELOG.zh-CN.md
@@ -15,6 +15,12 @@ timeline: true
 
 ---
 
+## 3.21.4
+
+`2019-08-09`
+
+- 🐞 修复 Dropdown.Button 的 `title` 类型。
+
 ## 3.21.3
 
 `2019-08-09`