diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceResponse.cs b/src/Mollie.Api/Models/Balance/Response/BalanceResponse.cs
index 187e7521..23006b77 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceResponse.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceResponse.cs
@@ -22,45 +22,45 @@ public class BalanceResponse : IResponseObject {
         /// <summary>
         /// The balance’s ISO 4217 currency code. 
         /// </summary>
-        public string Currency { get; set; }
+        public required string Currency { get; init; }
         
         /// <summary>
         /// The status of the balance.
         /// </summary>
         [JsonConverter(typeof(StringEnumConverter))]
-        public BalanceResponseStatus Status { get; set; }
+        public required BalanceResponseStatus Status { get; init; }
         
         /// <summary>
         /// The frequency at which the available amount on the balance will be settled to the configured transfer destination.
         /// See transferDestination.
         /// </summary>
-        public string TransferFrequency { get; set; }
+        public required string TransferFrequency { get; init; }
         
         /// <summary>
         /// The minimum amount configured for scheduled automatic settlements. As soon as the amount on the balance exceeds this threshold,
         /// the complete balance will be paid out to the transferDestination according to the configured transferFrequency.
         /// </summary>
-        public Amount TransferThreshold { get; set; }
+        public required Amount TransferThreshold { get; init; }
         
         /// <summary>
         /// The transfer reference set to be included in all the transfers for this balance. Either a string or null.
         /// </summary>
-        public string TransferReference { get; set; }
+        public string? TransferReference { get; set; }
         
         /// <summary>
         /// The destination where the available amount will be automatically transferred to according to the configured transferFrequency.
         /// </summary>
-        public BalanceTransferDestination TransferDestination { get; set; }
+        public required BalanceTransferDestination TransferDestination { get; init; }
         
         /// <summary>
         /// The amount directly available on the balance, e.g. {"currency":"EUR", "value":"100.00"}.
         /// </summary>
-        public Amount AvailableAmount { get; set; }
+        public required Amount AvailableAmount { get; init; }
         
         /// <summary>
         /// The total amount that is queued to be transferred to your balance. For example, a credit card payment can take a few days to clear.
         /// </summary>
-        public Amount PendingAmount { get; set; }
+        public required Amount PendingAmount { get; init; }
         
         /// <summary>
         /// An object with several URL objects relevant to the balance. Every URL object will contain an href and a type field.
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceResponseLinks.cs b/src/Mollie.Api/Models/Balance/Response/BalanceResponseLinks.cs
index 83d519de..cf8ca8aa 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceResponseLinks.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceResponseLinks.cs
@@ -5,7 +5,7 @@ public class BalanceResponseLinks {
         /// <summary>
         /// The API resource URL of the balance itself.
         /// </summary>
-        public UrlObjectLink<BalanceResponse> Self { get; set; }
+        public required UrlObjectLink<BalanceResponse> Self { get; init; }
         
         /// <summary>
         /// The URL to the order retrieval endpoint documentation.
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransaction.cs
index b80b5375..f9a98193 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransaction.cs
@@ -17,20 +17,20 @@ public class BalanceTransaction {
         /// <summary>
         /// The type of movement, for example payment or refund. See Mollie docs for a full list of values
         /// </summary>
-        public string Type { get; set; }
+        public required string Type { get; init; }
         
         /// <summary>
         /// The final amount that was moved to or from the balance, e.g. {"currency":"EUR", "value":"100.00"}.
         /// If the transaction moves funds away from the balance, for example when it concerns a refund, the
         /// amount will be negative.
         /// </summary>
-        public Amount ResultAmount { get; set; }
+        public required Amount ResultAmount { get; init; }
         
         /// <summary>
         /// The amount that was to be moved to or from the balance, excluding deductions. If the transaction
         /// moves funds away from the balance, for example when it concerns a refund, the amount will be negative.
         /// </summary>
-        public Amount InitialAmount { get; set; }
+        public required Amount InitialAmount { get; init; }
         
         /// <summary>
         /// The total amount of deductions withheld from the movement. For example, if a €10,00 payment comes in
@@ -38,7 +38,7 @@ public class BalanceTransaction {
         /// to a balance, we always round the deduction to a ‘real’ amount. Any differences between these realtime
         /// rounded amounts and the final invoice will be compensated when the invoice is generated.
         /// </summary>
-        public Amount Deductions { get; set; }
+        public required Amount Deductions { get; init; }
         
         /// <summary>
         /// The date and time of the movement, in ISO 8601 format.
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponse.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponse.cs
index 1483651c..880de3ac 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponse.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponse.cs
@@ -7,19 +7,19 @@ public class BalanceTransactionResponse {
         /// The number of transactions found in _embedded, which is either the requested number
         /// (with a maximum of 250) or the default number.
         /// </summary>
-        public int Count { get; set; }
+        public required int Count { get; init; }
         
         /// <summary>
         /// The object containing the queried data.
         /// </summary>
         [JsonProperty("_embedded")]
-        public BalanceTransactionEmbeddedResponse Embedded { get; set; }
+        public required BalanceTransactionEmbeddedResponse Embedded { get; init; }
         
         /// <summary>
         /// Links to help navigate through the lists of balance transactions. Every URL object will contain an href and a type field.
         /// </summary>
         [JsonProperty("_links")]
-        public BalanceTransactionResponseLinks Links { get; set; }
+        public required BalanceTransactionResponseLinks Links { get; init; }
     }
 
     public class BalanceTransactionEmbeddedResponse {
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponseLinks.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponseLinks.cs
index 86f0b6ec..b4677c1e 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponseLinks.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/BalanceTransactionResponseLinks.cs
@@ -5,17 +5,17 @@ public class BalanceTransactionResponseLinks {
         /// <summary>
         /// The URL to the current set of balance transactions.
         /// </summary>
-        public UrlObjectLink<BalanceTransactionResponse> Self { get; set; }
+        public required UrlObjectLink<BalanceTransactionResponse> Self { get; init; }
         
         /// <summary>
         /// The previous set of balance transactions, if available.
         /// </summary>
-        public UrlLink Previous { get; set; }
+        public required UrlLink Previous { get; init; }
         
         /// <summary>
         /// The next set of balance transactions, if available.
         /// </summary>
-        public UrlLink Next { get; set; }
+        public required UrlLink Next { get; init; }
         
         /// <summary>
         /// The URL to the balance transactions list endpoint documentation.
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/CaptureBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/CaptureBalanceTransaction.cs
index b1c45e75..a7ddf71e 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/CaptureBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/CaptureBalanceTransaction.cs
@@ -1,10 +1,10 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class CaptureBalanceTransaction : BalanceTransaction {
-        public CaptureTransactionContext Context { get; set; }
+        public required CaptureTransactionContext Context { get; init; }
     }
     
     public class CaptureTransactionContext {
-        public string PaymentId { get; set; }
-        public string CaptureId { get; set; }
+        public required string PaymentId { get; init; }
+        public required string CaptureId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/ChargebackBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/ChargebackBalanceTransaction.cs
index 9cb52377..27ac325d 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/ChargebackBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/ChargebackBalanceTransaction.cs
@@ -1,10 +1,10 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class ChargebackBalanceTransaction : BalanceTransaction {
-        public ChargebackTransactionContext Context { get; set; }
+        public required ChargebackTransactionContext Context { get; init; }
     }
     
     public class ChargebackTransactionContext {
-        public string PaymentId { get; set; }
-        public string ChargebackId { get; set; }
+        public required string PaymentId { get; init; }
+        public required string ChargebackId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/InvoiceBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/InvoiceBalanceTransaction.cs
index 6a8c5160..d90b075e 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/InvoiceBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/InvoiceBalanceTransaction.cs
@@ -1,9 +1,9 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class InvoiceBalanceTransaction : BalanceTransaction {
-        public InvoiceTransactionContext Context { get; set; }
+        public required InvoiceTransactionContext Context { get; init; }
     }
     
     public class InvoiceTransactionContext {
-        public string InvoiceId { get; set; }
+        public required string InvoiceId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/PaymentBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/PaymentBalanceTransaction.cs
index c6685bcc..0ac4c2bb 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/PaymentBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/PaymentBalanceTransaction.cs
@@ -1,9 +1,9 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class PaymentBalanceTransaction : BalanceTransaction {
-        public PaymentTransactionContext Context { get; set; }
+        public required PaymentTransactionContext Context { get; init; }
     }
     
     public class PaymentTransactionContext {
-        public string PaymentId { get; set; }
+        public required string PaymentId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/RefundBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/RefundBalanceTransaction.cs
index 39b34947..bc67c2dc 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/RefundBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/RefundBalanceTransaction.cs
@@ -1,10 +1,10 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class RefundBalanceTransaction : BalanceTransaction {
-        public RefundTransactionContext Context { get; set; }
+        public required RefundTransactionContext Context { get; init; }
     }
     
     public class RefundTransactionContext {
-        public string PaymentId { get; set; }
-        public string RefundId { get; set; }
+        public required string PaymentId { get; init; }
+        public required string RefundId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/SettlementBalanceTransaction.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/SettlementBalanceTransaction.cs
index 3cfbb92d..0957baf2 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/SettlementBalanceTransaction.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransaction/Specific/SettlementBalanceTransaction.cs
@@ -1,10 +1,10 @@
 namespace Mollie.Api.Models.Balance.Response.BalanceTransaction.Specific {
     public class SettlementBalanceTransaction : BalanceTransaction {
-        public SettlementTransactionContext Context { get; set; }
+        public required SettlementTransactionContext Context { get; init; }
     }
     
     public class SettlementTransactionContext {
-        public string TransferId { get; set; }
-        public string SettlementId { get; set; }
+        public required string TransferId { get; init; }
+        public required string SettlementId { get; init; }
     }
 }
\ No newline at end of file
diff --git a/src/Mollie.Api/Models/Balance/Response/BalanceTransferDestination.cs b/src/Mollie.Api/Models/Balance/Response/BalanceTransferDestination.cs
index 54cb0de1..13b3c612 100644
--- a/src/Mollie.Api/Models/Balance/Response/BalanceTransferDestination.cs
+++ b/src/Mollie.Api/Models/Balance/Response/BalanceTransferDestination.cs
@@ -3,17 +3,17 @@ public class BalanceTransferDestination {
         /// <summary>
         /// The default destination of automatic scheduled transfers. Currently only bank-account is supported.
         /// </summary>
-        public string Type { get; set; }
+        public required string Type { get; init; }
         
         /// <summary>
         /// The configured bank account number of the beneficiary the balance amount is to be transferred to.
         /// </summary>
-        public string BankAccount { get; set; }
+        public required string BankAccount { get; init; }
         
         /// <summary>
         /// The full name of the beneficiary the balance amount is to be transferred to.
         /// </summary>
-        public string BeneficiaryName { get; set; }
+        public required string BeneficiaryName { get; init; }
 
         public override string ToString() {
             return $"{Type} - {BankAccount} - {BeneficiaryName}";