diff --git a/src/Mollie.Api/Models/Chargeback/ChargebackResponse.cs b/src/Mollie.Api/Models/Chargeback/ChargebackResponse.cs
index 0d45a384..ec6a4cae 100644
--- a/src/Mollie.Api/Models/Chargeback/ChargebackResponse.cs
+++ b/src/Mollie.Api/Models/Chargeback/ChargebackResponse.cs
@@ -11,13 +11,13 @@ public class ChargebackResponse : IResponseObject {
         /// <summary>
         /// The amount charged back.
         /// </summary>
-        public Amount Amount { get; set; }
+        public required Amount Amount { get; init; }
 
         /// <summary>
         /// This optional field will contain the amount that will be deducted from your account, converted to the currency 
         /// your account is settled in. It follows the same syntax as the amount property.
         /// </summary>
-        public Amount SettlementAmount { get; set; }
+        public Amount? SettlementAmount { get; set; }
 
         /// <summary>
         /// The date and time the chargeback was issued, in ISO 8601 format.
@@ -32,17 +32,17 @@ public class ChargebackResponse : IResponseObject {
         /// <summary>
         /// The id of the payment this chargeback belongs to.
         /// </summary>
-		public string PaymentId { get; set; }
+		public required string PaymentId { get; init; }
 	    
 		/// <summary>
         /// The reason given for a Chargeback, this can help determine the cost for the chargeback
         /// </summary>
-        public ChargebackResponseReason Reason { get; set; }
+        public ChargebackResponseReason? Reason { get; set; }
 
         /// <summary>
         /// An object with several URL objects relevant to the chargeback. Every URL object will contain an href and a type field.
         /// </summary>
         [JsonProperty("_links")]
-        public ChargebackResponseLinks Links { get; set; }
+        public required ChargebackResponseLinks Links { get; init; }
     }
 }
diff --git a/src/Mollie.Api/Models/Chargeback/ChargebackResponseLinks.cs b/src/Mollie.Api/Models/Chargeback/ChargebackResponseLinks.cs
index 2ab59af8..bcc500c2 100644
--- a/src/Mollie.Api/Models/Chargeback/ChargebackResponseLinks.cs
+++ b/src/Mollie.Api/Models/Chargeback/ChargebackResponseLinks.cs
@@ -7,17 +7,17 @@ public class ChargebackResponseLinks {
         /// <summary>
         /// The API resource URL of the chargeback itself.
         /// </summary>
-        public UrlObjectLink<ChargebackResponse> Self { get; set; }
+        public required UrlObjectLink<ChargebackResponse> Self { get; init; }
 
         /// <summary>
         /// The API resource URL of the payment this chargeback belongs to.
         /// </summary>
-        public UrlObjectLink<PaymentResponse> Payment { get; set; }
+        public required UrlObjectLink<PaymentResponse> Payment { get; init; }
 
         /// <summary>
         /// The API resource URL of the settlement this payment has been settled with. Not present if not yet settled.
         /// </summary>
-        public UrlObjectLink<SettlementResponse> Settlement { get; set; }
+        public UrlObjectLink<SettlementResponse>? Settlement { get; set; }
 
         /// <summary>
         /// The URL to the chargeback retrieval endpoint documentation.
diff --git a/src/Mollie.Api/Models/Chargeback/ChargebackResponseReason.cs b/src/Mollie.Api/Models/Chargeback/ChargebackResponseReason.cs
index 412c5b71..6c429a0b 100644
--- a/src/Mollie.Api/Models/Chargeback/ChargebackResponseReason.cs
+++ b/src/Mollie.Api/Models/Chargeback/ChargebackResponseReason.cs
@@ -1,16 +1,12 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
 namespace Mollie.Api.Models.Chargeback {
     public class ChargebackResponseReason {
         /// <summary>
         /// The reason for the chargeback, these are documented here on Mollie's webiste https://help.mollie.com/hc/en-us/articles/115000309865-Why-did-my-direct-debit-payment-fail-
         /// </summary>
-        public string Code { get; set; }
+        public required string Code { get; init; }
         /// <summary>
         /// an accompanying note to the code
         /// </summary>
-        public string Description { get; set; }
+        public required string Description { get; init; }
     }
 }