diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/complaint/ComplaintDetailResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/complaint/ComplaintDetailResult.java
index e6342efb46..157e095bba 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/complaint/ComplaintDetailResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/complaint/ComplaintDetailResult.java
@@ -135,7 +135,7 @@ public static class ComplaintMedia implements Serializable {
      * </pre>
      */
     @SerializedName("media_url")
-    private String mediaUrl;
+    private List<String> mediaUrl;
 
   }