diff --git a/GoCardless/Resources/PayoutItem.cs b/GoCardless/Resources/PayoutItem.cs
index c5ea380..a99e33e 100644
--- a/GoCardless/Resources/PayoutItem.cs
+++ b/GoCardless/Resources/PayoutItem.cs
@@ -119,6 +119,12 @@ public class PayoutItemLinks
         /// </summary>
         [JsonProperty("payment")]
         public string Payment { get; set; }
+
+        /// <summary>
+        /// Unique identifier, beginning with "RF".
+        /// </summary>
+        [JsonProperty("refund")]
+        public string Refund { get; set; }
     }
     
     /// <summary>