diff --git a/cross-platform/iOS/README.md b/cross-platform/iOS/README.md
index 464e0d537f..e97c32fcc6 100644
--- a/cross-platform/iOS/README.md
+++ b/cross-platform/iOS/README.md
@@ -2,4 +2,4 @@
 
 ## 下载地址
 
-[最新C接口下载](https://imsdk-1252463788.cos.ap-guangzhou.myqcloud.com/4.7.1/cross-platform/TIM_Cross_Platform_iOS_latest.zip)
+[最新C接口下载](https://imsdk-1252463788.cos.ap-guangzhou.myqcloud.com/4.7.2/cross-platform/TIM_Cross_Platform_iOS_latest.zip)