diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1c0435..8c582ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -85,4 +85,6 @@
  ### 1.4.2
  * fix: Optimize synchronization channel messages
  ### 1.4.3
- * fix: Modifying messages sent by oneself will increase the issue of unread quantity
\ No newline at end of file
+ * fix: Modifying messages sent by oneself will increase the issue of unread quantity
+ ### 1.4.4
+ * fix: Update parsing channel member extension data
\ No newline at end of file
diff --git a/lib/entity/channel_member.dart b/lib/entity/channel_member.dart
index ebd25a0..5798e8a 100644
--- a/lib/entity/channel_member.dart
+++ b/lib/entity/channel_member.dart
@@ -1,5 +1,3 @@
-import 'dart:collection';
-
 class WKChannelMember {
   String channelID = "";
   //频道类型
@@ -27,7 +25,7 @@ class WKChannelMember {
   // 机器人0否1是
   int robot = 0;
   //扩展字段
-  HashMap extraMap = HashMap();
+  dynamic extraMap;
   // 用户备注
   String remark = "";
   // 邀请者uid
diff --git a/pubspec.yaml b/pubspec.yaml
index 7582a40..593d32c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,7 +15,7 @@ description: wukong IM flutter sdk
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.4.3
+version: 1.4.4
 homepage: https://github.com/WuKongIM/WuKongIMFlutterSDK
 
 environment: