diff --git a/BritishHorseRacingApi/Models/SexType.cs b/BritishHorseRacingApi/Models/SexType.cs
index 26cd3d9..f14d9c9 100644
--- a/BritishHorseRacingApi/Models/SexType.cs
+++ b/BritishHorseRacingApi/Models/SexType.cs
@@ -1,5 +1,5 @@
 namespace BritishHorseRacingApi.Models
 {
-    public enum SexType { Filly, Gelding, Colt, Mare, Stallion };
+    public enum SexType { Filly, Gelding, Colt, Mare, Stallion, Rig };
 }
    
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