diff --git a/src/Nexus.Crypto.SDK/Models/Customer/CustomerModel.cs b/src/Nexus.Crypto.SDK/Models/Customer/CustomerModel.cs
index b82c09d..438b849 100644
--- a/src/Nexus.Crypto.SDK/Models/Customer/CustomerModel.cs
+++ b/src/Nexus.Crypto.SDK/Models/Customer/CustomerModel.cs
@@ -63,4 +63,42 @@ public class DeleteAccountResponse
 {
     public string AccountCode { get; set; }
     public string AccountStatus { get; set; }
+}
+
+public class UpdateCustomerRequest
+{
+    public string? TrustLevelCode { get; set; }
+    public string? Email { get; set; }
+    public string? Name { get; set; }
+    public string? FirstName { get; set; }
+    public string? LastName { get; set; }
+    public string? Phone { get; set; }
+    public string? DateOfBirth { get; set; }
+    public string? CompanyName { get; set; }
+    public string? Address { get; set; }
+    public string? City { get; set; }
+    public string? ZipCode { get; set; }
+    public string? State { get; set; }
+    public string? Tag { get; set; }
+    public string? Status { get; set; }
+    public string? CountryCode { get; set; }
+    public RiskQualificationEnum? RiskQualification { get; set; }
+    public DateTime? LatestReview { get; set; }
+    public bool? IsReviewRecommended { get; set; }
+    public string? Comment { get; set; }
+    public string? Reason { get; set; }
+    public IDictionary<string, string>? Data { get; set; }
+    public string[]? FieldsToClear { get; set; }
+    
+    public int? CurrencyId { get; set; }
+    public bool? IsBusiness { get; set; }
+}
+
+public enum RiskQualificationEnum
+{
+    None,
+    Low,
+    Medium,
+    High,
+    VeryHigh
 }
\ No newline at end of file
diff --git a/src/Nexus.Crypto.SDK/Services/BaseService.cs b/src/Nexus.Crypto.SDK/Services/BaseService.cs
index ed0a6be..1208d42 100644
--- a/src/Nexus.Crypto.SDK/Services/BaseService.cs
+++ b/src/Nexus.Crypto.SDK/Services/BaseService.cs
@@ -93,7 +93,7 @@ public async Task<TResponse> PostAsync<TInput, TResponse>(string endPoint, TInpu
     {
         var client = await GetApiClient(apiVersion);
 
-        var httpResponse = await client.PostAsJsonAsync(endPoint, postObject);
+        var httpResponse = await client.PostAsJsonAsync(endPoint, postObject, _serializerOptions);
 
         if (!httpResponse.IsSuccessStatusCode)
         {
@@ -112,7 +112,7 @@ public async Task<TResponse> PutAsync<TInput, TResponse>(string endPoint, TInput
     {
         var client = await GetApiClient(apiVersion);
 
-        var httpResponse = await client.PutAsJsonAsync(endPoint, postObject);
+        var httpResponse = await client.PutAsJsonAsync(endPoint, postObject, _serializerOptions);
 
         if (!httpResponse.IsSuccessStatusCode)
         {
diff --git a/src/Nexus.Crypto.SDK/Services/CustomerService.cs b/src/Nexus.Crypto.SDK/Services/CustomerService.cs
index 35db24e..ac66367 100644
--- a/src/Nexus.Crypto.SDK/Services/CustomerService.cs
+++ b/src/Nexus.Crypto.SDK/Services/CustomerService.cs
@@ -46,5 +46,13 @@ public async Task<CustomResultHolder<DeleteCustomerResponse>> DeleteCustomer(str
     {
         return await DeleteAsync<CustomResultHolder<DeleteCustomerResponse>>($"customer/{customerCode}", ApiVersion);
     }
-    
+
+    public async Task<CustomResultHolder<GetCustomer>> UpdateCustomer(string customerCode,
+        UpdateCustomerRequest request)
+    {
+        return await PutAsync<UpdateCustomerRequest, CustomResultHolder<GetCustomer>>(
+            $"customer/{customerCode}",
+            request,
+            ApiVersion);
+    }
 }
\ No newline at end of file
diff --git a/src/Nexus.Crypto.SDK/Services/ICustomerService.cs b/src/Nexus.Crypto.SDK/Services/ICustomerService.cs
index 8cc88c8..4ceecda 100644
--- a/src/Nexus.Crypto.SDK/Services/ICustomerService.cs
+++ b/src/Nexus.Crypto.SDK/Services/ICustomerService.cs
@@ -19,4 +19,5 @@ Task<CustomResultHolder<PagedResult<GetCustomerTrace>>> GetCustomerTraces(string
     
     Task<CustomResultHolder<DeleteCustomerResponse>> DeleteCustomer(string customerCode);
     
+    Task<CustomResultHolder<GetCustomer>> UpdateCustomer(string customerCode, UpdateCustomerRequest request);
 }
\ No newline at end of file
diff --git a/tests/Nexus.Crypto.SDK.Tests/NexusLabelApiSdkTests.cs b/tests/Nexus.Crypto.SDK.Tests/NexusLabelApiSdkTests.cs
index c052cc0..5ede827 100644
--- a/tests/Nexus.Crypto.SDK.Tests/NexusLabelApiSdkTests.cs
+++ b/tests/Nexus.Crypto.SDK.Tests/NexusLabelApiSdkTests.cs
@@ -788,7 +788,7 @@ public async Task GetCustomers_Success()
             });
 
         var response = await _logicHelper.ApiService.Customer
-            .GetCustomers(new System.Collections.Generic.Dictionary<string, string>
+            .GetCustomers(new Dictionary<string, string>
             {
                 { "startDate", "2021-01-01T00:00:01Z" },
                 { "endDate", "2022-01-01T00:00:03Z" },