diff --git a/GumpTechDocument.md b/GumpTechDocument.md
index f9c9670..a321a66 100644
--- a/GumpTechDocument.md
+++ b/GumpTechDocument.md
@@ -4,7 +4,7 @@
 SDK下载地址
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-Android SDK 下载地址    [here](http://s3-ap-southeast-1.amazonaws.com/sletsgame/sdk/GumpSDK-Android.rar)         
+Android SDK 下载地址    [here](http://dlpic.letsgame.mobi/sdk/gamesdk.rar)         
 IOS SDk 下载地址：[click here]()