diff --git a/README.md b/README.md
index f73e8be..0d9e1a0 100755
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
 ## 安装
 
 ```bash
-composer require "overtrue/laravel-wechat"
+composer require overtrue/laravel-wechat:^7.2
 ```
 
 ## 配置