diff --git a/README.md b/README.md
index 5aebfc0..49b7707 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ xss-core는 자유롭게 XssFilter를 등록하고 확장하여 사용할 수 
    
 [![Hits](https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Fxss-stage&count_bg=%23FF4848&title_bg=%232D2D2D&icon=&icon_color=%23E7E7E7&title=hits&edge_flat=false)](https://hits.seeyoufarm.com) [![made with love](https://camo.githubusercontent.com/c6c5b56fc051557203c6dffa4242b41b09ff22f6303da15e47162a5c1691e8a5/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f4d616465253230776974682d4c6f76652d2d2545322539442541342d726564)](https://camo.githubusercontent.com/c6c5b56fc051557203c6dffa4242b41b09ff22f6303da15e47162a5c1691e8a5/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f4d616465253230776974682d4c6f76652d2d2545322539442541342d726564)  
 ![needed jdk version](https://img.shields.io/badge/JDK-8-blue)   
-![api-version](https://img.shields.io/badge/xss--extension--json-1.1-F29494)   
+![api-version](https://img.shields.io/badge/xss--extension--json-1.2-F29494)   
    
 이 라이브러리는 xss-core에 string을 처리할 수 있는 XssFilter구현체를 등록시키며, String 객체에 대해서 Xss filtering을 진행할 수 있습니다.
 이 라이브러리를 주입받으면, 다음과 같이 `@Xss`의 value로 `string`을 지정할 수 있습니다.   
@@ -19,8 +19,3 @@ xss-core는 자유롭게 XssFilter를 등록하고 확장하여 사용할 수 
 ```
 
 자세한 사용법은 [여기](https://github.com/xss-stage)를 참조하세요.
-   
-## Extensions
-core : [xss-core-1.1](https://github.com/xss-stage/xss-core)    
-string-extension : [xss-extension-string-1.1](https://github.com/xss-stage/xss-extension-string)   
-json-extension : [xss-extension-json-1.1](https://github.com/xss-stage/xss-extension-json)