diff --git a/src/main/java/com/wechat/pay/contrib/apache/httpclient/notification/Request.java b/src/main/java/com/wechat/pay/contrib/apache/httpclient/notification/Request.java
index 6a34330..083ca63 100644
--- a/src/main/java/com/wechat/pay/contrib/apache/httpclient/notification/Request.java
+++ b/src/main/java/com/wechat/pay/contrib/apache/httpclient/notification/Request.java
@@ -5,7 +5,7 @@
  *
  * @author lianup
  */
-interface Request {
+public interface Request {
 
     /**
      * 获取请求头Wechatpay-Serial