diff --git a/src/Mandrill/Models/WebHookEvent.cs b/src/Mandrill/Models/WebHookEvent.cs
index cc600b8..6f76cda 100644
--- a/src/Mandrill/Models/WebHookEvent.cs
+++ b/src/Mandrill/Models/WebHookEvent.cs
@@ -205,6 +205,7 @@ public class WebHookMessage
///
/// Gets or sets the bounce description.
///
+ [JsonProperty("bounce_description")]
public string BounceDescription { get; set; }
///