diff --git a/Android/SDK/README.md b/Android/SDK/README.md
index 4045b0089..1ea2e7c98 100644
--- a/Android/SDK/README.md
+++ b/Android/SDK/README.md
@@ -7,7 +7,7 @@
 
 
 ### 精简版
-[最新精简版 IM SDK smart aar 下载](https://imsdk-1252463788.cos.ap-guangzhou.myqcloud.com/restructure/android/5.1.129/imsdk-smart-5.1.129.aar)
+[最新精简版 IM SDK smart aar 下载](https://imsdk-1252463788.cos.ap-guangzhou.myqcloud.com/restructure/android/5.1.131/imsdk-smart-5.1.131.aar)
 
 
 ### [标准版与精简版差异对比](https://github.com/tencentyun/TIMSDK#%E6%A0%87%E5%87%86%E7%89%88%E4%B8%8E%E7%B2%BE%E7%AE%80%E7%89%88%E5%B7%AE%E5%BC%82%E5%AF%B9%E6%AF%94)