diff --git a/FastBLE-1.3.1.jar b/FastBLE-2.3.1.jar
similarity index 100%
rename from FastBLE-1.3.1.jar
rename to FastBLE-2.3.1.jar
diff --git a/README.md b/README.md
index 6134dd2..550129f 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Android Bluetooth Low Energy 蓝牙快速开发框架。
 
 ### Jar
 
-[FastBLE-1.3.1.jar](https://github.com/Jasonchenlijian/FastBle/raw/master/FastBLE-1.3.1.jar) 
+[FastBLE-2.3.1.jar](https://github.com/Jasonchenlijian/FastBle/raw/master/FastBLE-2.3.1.jar) 
 
 ## 经验分享