diff --git a/bytedesk_demo/README.md b/bytedesk_demo/README.md
index 29b8e13..dcdd92a 100644
--- a/bytedesk_demo/README.md
+++ b/bytedesk_demo/README.md
@@ -46,6 +46,13 @@ buildscript {
 - 获取subDomain，也即企业号：登录后台->客服管理->客服账号->企业号
 - 获取技能组workGroupWid, 登录后台->技能组->wid
 
+```bash
+# pubspec.yaml添加
+#注意：pull_to_refresh: 1.6.4不兼容，故强制依赖1.6.3
+dependency_overrides:
+ pull_to_refresh: 1.6.3
+```
+
 ### 第二步：初始化
 
 - BytedeskKefu.init(_appKey, _subDomain);
diff --git a/bytedesk_demo/pubspec.yaml b/bytedesk_demo/pubspec.yaml
index 5f55af9..343f82d 100644
--- a/bytedesk_demo/pubspec.yaml
+++ b/bytedesk_demo/pubspec.yaml
@@ -40,7 +40,7 @@ dependencies:
   # 请在ios/Podfile中添加：use_frameworks! 
   vibration: ^1.7.2
   # 在线客服 https://pub.dev/packages/bytedesk_kefu
-  bytedesk_kefu: ^0.5.2
+  bytedesk_kefu: ^0.5.5
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.