diff --git a/src/Auth0.ManagementApi/Models/CustomDomain/CustomDomainVerificationResponse.cs b/src/Auth0.ManagementApi/Models/CustomDomain/CustomDomainVerificationResponse.cs
index 3a64509a..bbc80155 100644
--- a/src/Auth0.ManagementApi/Models/CustomDomain/CustomDomainVerificationResponse.cs
+++ b/src/Auth0.ManagementApi/Models/CustomDomain/CustomDomainVerificationResponse.cs
@@ -1,10 +1,16 @@
-namespace Auth0.ManagementApi.Models
+using Newtonsoft.Json;
+
+namespace Auth0.ManagementApi.Models
 {
     /// <summary>
     /// Response when requesting a custom domain verification
     /// </summary>
     public class CustomDomainVerificationResponse : CustomDomainBase
     {
-        
+        /// <summary>
+        /// The CNAME API key header value.
+        /// </summary>
+        [JsonProperty("cname_api_key")]
+        public string CnameApiKey { get; set; }
     }
-}
\ No newline at end of file
+}