diff --git a/Sources/Telesign/API/SubTypes.swift b/Sources/Telesign/API/SubTypes.swift
index 958edc2..4bd119a 100644
--- a/Sources/Telesign/API/SubTypes.swift
+++ b/Sources/Telesign/API/SubTypes.swift
@@ -14,7 +14,7 @@ public struct Status: TelesignModel {
     /// A text description of the status code.
     var description: String
     /// This is a timestamp showing when your transaction status was updated last.
-    var updatedOn: Date
+    var updatedOn: Date?
     
     public enum CodingKeys: String, CodingKey {
         case code