diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/ReturnOrdersRequest.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/ReturnOrdersRequest.java
index e3e7c98e3..b1661209a 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/ReturnOrdersRequest.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/ReturnOrdersRequest.java
@@ -118,4 +118,18 @@ public class ReturnOrdersRequest implements Serializable {
    */
   @SerializedName(value = "description")
   private String description;
+
+  /**
+   * <pre>
+   * 字段名：微信订单号
+   * 变量名：transaction_id
+   * 是否必填：否
+   * 类型：string（32）
+   * 描述：
+   *  微信支付订单号，大于6个月的订单，必填
+   *  示例值：4208450740201411110007820472
+   * </pre>
+   */
+  @SerializedName(value = "transaction_id")
+  private String transactionId;
 }