diff --git a/Tests/TicketTests.cs b/Tests/TicketTests.cs
index 6b9cfd1d..edfdaab7 100644
--- a/Tests/TicketTests.cs
+++ b/Tests/TicketTests.cs
@@ -220,6 +220,9 @@ public void CanCreateUpdateAndDeleteTicket()
             Assert.NotNull(res);
             Assert.Greater(res.Id, 0);
 
+            Assert.AreEqual(res.CreatedAt, res.UpdatedAt);
+            Assert.LessOrEqual(res.CreatedAt - DateTimeOffset.UtcNow, TimeSpan.FromMinutes (1.0));
+
             res.Status = TicketStatus.Solved;
             res.AssigneeId = Settings.UserId;
 
@@ -234,6 +237,7 @@ public void CanCreateUpdateAndDeleteTicket()
             Assert.NotNull(updateResponse);
             Assert.AreEqual(updateResponse.Audit.Events.First().Body, body);
             Assert.Greater(updateResponse.Ticket.CollaboratorIds.Count, 0);
+            Assert.GreaterOrEqual(updateResponse.Ticket.UpdatedAt, updateResponse.Ticket.CreatedAt);
             
             Assert.True(api.Tickets.Delete(res.Id.Value));
         }
@@ -264,6 +268,28 @@ public void CanCreateTicketWithRequester()
             Assert.True(api.Tickets.Delete(res.Id.Value));
         }
 
+        [Test]
+        public void CanCreateTicketWithDueDate()
+        {
+            var dueAt = DateTimeOffset.UtcNow;
+
+            var ticket = new Ticket()
+            {
+                Subject = "ticket with due date",
+                Comment = new Comment() { Body = "test comment" },
+                Type = "task",
+                Priority = TicketPriorities.Normal,
+                DueAt = DateTimeOffset.UtcNow
+            };
+
+            var res = api.Tickets.CreateTicket(ticket).Ticket;
+
+            Assert.NotNull(res);
+            Assert.AreEqual(dueAt.ToString(), res.DueAt.ToString());
+
+            Assert.True(api.Tickets.Delete(res.Id.Value));
+        }
+
         [Test]
         public void CanCreateTicketWithTicketFormId()
         {
diff --git a/ZendeskApi_v2/Models/AccountsAndActivities/Activity.cs b/ZendeskApi_v2/Models/AccountsAndActivities/Activity.cs
index 09892e6e..bee2e1de 100644
--- a/ZendeskApi_v2/Models/AccountsAndActivities/Activity.cs
+++ b/ZendeskApi_v2/Models/AccountsAndActivities/Activity.cs
@@ -1,7 +1,9 @@
 // JSON C# Class Generator
 // http://at-my-window.blogspot.com/?page=json-class-generator
 
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 
 namespace ZendeskApi_v2.Models.AccountsAndActivities
@@ -29,9 +31,11 @@ public class Activity
         public ZendeskApi_v2.Models.Users.User Actor { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Categories/Category.cs b/ZendeskApi_v2/Models/Categories/Category.cs
index f5ac37db..6bd62c2d 100644
--- a/ZendeskApi_v2/Models/Categories/Category.cs
+++ b/ZendeskApi_v2/Models/Categories/Category.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Categories
@@ -24,9 +25,11 @@ public class Category
         public int Position { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/CustomRoles/CustomRole.cs b/ZendeskApi_v2/Models/CustomRoles/CustomRole.cs
index 477b17b8..dfb1b22a 100644
--- a/ZendeskApi_v2/Models/CustomRoles/CustomRole.cs
+++ b/ZendeskApi_v2/Models/CustomRoles/CustomRole.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.CustomRoles
@@ -21,10 +22,12 @@ public class CustomRole
         public string Description { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("configuration")]
         public Configuration Configuration { get; set; }
diff --git a/ZendeskApi_v2/Models/Forums/Forum.cs b/ZendeskApi_v2/Models/Forums/Forum.cs
index bafe853a..39c82daf 100644
--- a/ZendeskApi_v2/Models/Forums/Forum.cs
+++ b/ZendeskApi_v2/Models/Forums/Forum.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Forums
@@ -43,9 +44,11 @@ public class Forum
         public string Access { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Forums/ForumSubscription.cs b/ZendeskApi_v2/Models/Forums/ForumSubscription.cs
index 51dfec5f..c44a9ff9 100644
--- a/ZendeskApi_v2/Models/Forums/ForumSubscription.cs
+++ b/ZendeskApi_v2/Models/Forums/ForumSubscription.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Forums
@@ -22,6 +23,7 @@ public class ForumSubscription
         public long? UserId { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Groups/Group.cs b/ZendeskApi_v2/Models/Groups/Group.cs
index 749847e6..e7e9fd92 100644
--- a/ZendeskApi_v2/Models/Groups/Group.cs
+++ b/ZendeskApi_v2/Models/Groups/Group.cs
@@ -1,4 +1,6 @@
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Groups
 {
@@ -18,9 +20,11 @@ public class Group
         public bool Deleted { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Groups/GroupMembership.cs b/ZendeskApi_v2/Models/Groups/GroupMembership.cs
index b14904d5..39f4fbc6 100644
--- a/ZendeskApi_v2/Models/Groups/GroupMembership.cs
+++ b/ZendeskApi_v2/Models/Groups/GroupMembership.cs
@@ -1,4 +1,6 @@
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Groups
 {
@@ -21,9 +23,11 @@ public class GroupMembership
         public bool Default { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Locales/Locale.cs b/ZendeskApi_v2/Models/Locales/Locale.cs
index 17344df0..cfc58f8b 100644
--- a/ZendeskApi_v2/Models/Locales/Locale.cs
+++ b/ZendeskApi_v2/Models/Locales/Locale.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Locales
@@ -25,9 +26,11 @@ public class Locale
         public string Name { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Macros/Macro.cs b/ZendeskApi_v2/Models/Macros/Macro.cs
index 841c308c..0af9e30a 100644
--- a/ZendeskApi_v2/Models/Macros/Macro.cs
+++ b/ZendeskApi_v2/Models/Macros/Macro.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Macros
@@ -24,10 +25,12 @@ public class Macro
         public bool? Active { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("restriction")]
         public Restriction Restriction { get; set; }
diff --git a/ZendeskApi_v2/Models/Organizations/Organization.cs b/ZendeskApi_v2/Models/Organizations/Organization.cs
index 9b0e86a7..17f4daf7 100644
--- a/ZendeskApi_v2/Models/Organizations/Organization.cs
+++ b/ZendeskApi_v2/Models/Organizations/Organization.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Organizations
@@ -25,10 +26,12 @@ public class Organization
         public string Name { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("domain_names")]
         public IList<object> DomainNames { get; set; }
diff --git a/ZendeskApi_v2/Models/Requests/Request.cs b/ZendeskApi_v2/Models/Requests/Request.cs
index 2ec1b58f..26a6c490 100644
--- a/ZendeskApi_v2/Models/Requests/Request.cs
+++ b/ZendeskApi_v2/Models/Requests/Request.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 using ZendeskApi_v2.Models.Shared;
 using ZendeskApi_v2.Models.Tickets;
@@ -39,10 +40,12 @@ public class Request
         public IList<CustomField> CustomFields { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         /// <summary>
         /// This is used for updates only
diff --git a/ZendeskApi_v2/Models/SatisfactionRatings/SatisfactionRating.cs b/ZendeskApi_v2/Models/SatisfactionRatings/SatisfactionRating.cs
index 4a8ca265..5e20749e 100644
--- a/ZendeskApi_v2/Models/SatisfactionRatings/SatisfactionRating.cs
+++ b/ZendeskApi_v2/Models/SatisfactionRatings/SatisfactionRating.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Satisfaction
@@ -34,10 +35,12 @@ public class SatisfactionRating
         public string Score { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("comment")]
         public string Comment { get; set; }
diff --git a/ZendeskApi_v2/Models/Search/Result.cs b/ZendeskApi_v2/Models/Search/Result.cs
index 209d6dd1..57b53fa4 100644
--- a/ZendeskApi_v2/Models/Search/Result.cs
+++ b/ZendeskApi_v2/Models/Search/Result.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 using ZendeskApi_v2.Models.Shared;
 using ZendeskApi_v2.Models.Tickets;
@@ -66,10 +67,12 @@ public class Result
         public int? CommentsCount { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("id")]
         public int Id { get; set; }
diff --git a/ZendeskApi_v2/Models/Shared/Audit.cs b/ZendeskApi_v2/Models/Shared/Audit.cs
index 4133cd68..5ff2c106 100644
--- a/ZendeskApi_v2/Models/Shared/Audit.cs
+++ b/ZendeskApi_v2/Models/Shared/Audit.cs
@@ -1,5 +1,7 @@
+using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Shared
 {
@@ -12,7 +14,8 @@ public  class Audit
         public string TicketId { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("author_id")]
         public long AuthorId { get; set; }
@@ -26,4 +29,4 @@ public  class Audit
         [JsonProperty("events")]
         public IList<Event> Events { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/SharingAgreements/SharingAgreement.cs b/ZendeskApi_v2/Models/SharingAgreements/SharingAgreement.cs
index 85ecfe68..a493f2d8 100644
--- a/ZendeskApi_v2/Models/SharingAgreements/SharingAgreement.cs
+++ b/ZendeskApi_v2/Models/SharingAgreements/SharingAgreement.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.SharingAgreements
@@ -27,6 +28,7 @@ public class SharingAgreement
         public string Status { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Tickets/BaseTicket.cs b/ZendeskApi_v2/Models/Tickets/BaseTicket.cs
index 8bbaac87..09e2ff25 100644
--- a/ZendeskApi_v2/Models/Tickets/BaseTicket.cs
+++ b/ZendeskApi_v2/Models/Tickets/BaseTicket.cs
@@ -1,4 +1,6 @@
-using Newtonsoft.Json;
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -11,10 +13,12 @@ public class BaseTicket
         public long? Id { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
     }
 }
diff --git a/ZendeskApi_v2/Models/Tickets/Comment.cs b/ZendeskApi_v2/Models/Tickets/Comment.cs
index 8d097e23..b274733c 100644
--- a/ZendeskApi_v2/Models/Tickets/Comment.cs
+++ b/ZendeskApi_v2/Models/Tickets/Comment.cs
@@ -1,5 +1,7 @@
+using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using ZendeskApi_v2.Models.Shared;
 
 namespace ZendeskApi_v2.Models.Tickets
@@ -43,7 +45,8 @@ public class Comment
         public MetaData MetaData { get; private set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
     }
 
diff --git a/ZendeskApi_v2/Models/Tickets/FieldHeaders.cs b/ZendeskApi_v2/Models/Tickets/FieldHeaders.cs
index 4b1fb370..35288fca 100644
--- a/ZendeskApi_v2/Models/Tickets/FieldHeaders.cs
+++ b/ZendeskApi_v2/Models/Tickets/FieldHeaders.cs
@@ -1,4 +1,6 @@
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -42,25 +44,31 @@ public class FieldHeaders
         public string TicketType { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("assigned_at")]
-        public string AssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? AssignedAt { get; set; }
 
         [JsonProperty("organization_name")]
         public string OrganizationName { get; set; }
 
         [JsonProperty("due_date")]
-        public string DueDate { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? DueDate { get; set; }
 
         [JsonProperty("initially_assigned_at")]
-        public string InitiallyAssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? InitiallyAssignedAt { get; set; }
 
         [JsonProperty("solved_at")]
-        public string SolvedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? SolvedAt { get; set; }
 
         [JsonProperty("resolution_time")]
         public string ResolutionTime { get; set; }
@@ -131,4 +139,4 @@ public class FieldHeaders
         [JsonProperty("id")]
         public string Id { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Tickets/Suspended/SuspendedTicket.cs b/ZendeskApi_v2/Models/Tickets/Suspended/SuspendedTicket.cs
index d90c4aa9..3599f00f 100644
--- a/ZendeskApi_v2/Models/Tickets/Suspended/SuspendedTicket.cs
+++ b/ZendeskApi_v2/Models/Tickets/Suspended/SuspendedTicket.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Tickets.Suspended
@@ -34,10 +35,12 @@ public class SuspendedTicket
         public string MessageId { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("via")]
         public Via Via { get; set; }
diff --git a/ZendeskApi_v2/Models/Tickets/Ticket.cs b/ZendeskApi_v2/Models/Tickets/Ticket.cs
index 429ccbca..a990283c 100644
--- a/ZendeskApi_v2/Models/Tickets/Ticket.cs
+++ b/ZendeskApi_v2/Models/Tickets/Ticket.cs
@@ -1,13 +1,13 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using ZendeskApi_v2.Models.Shared;
 
 namespace ZendeskApi_v2.Models.Tickets
 {    
     public class Ticket : BaseTicket
     {
-        
-
         [JsonProperty("external_id")]
         public object ExternalId { get; set; }             
 
@@ -70,7 +70,8 @@ public class Ticket : BaseTicket
         public bool? HasIncidents { get; set; }
 
         [JsonProperty("due_at")]
-        public string? DueAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? DueAt { get; set; }
 
         [JsonProperty("tags")]
         public IList<string> Tags { get; set; }
diff --git a/ZendeskApi_v2/Models/Tickets/TicketExportResult.cs b/ZendeskApi_v2/Models/Tickets/TicketExportResult.cs
index 7abbb98a..681002f4 100644
--- a/ZendeskApi_v2/Models/Tickets/TicketExportResult.cs
+++ b/ZendeskApi_v2/Models/Tickets/TicketExportResult.cs
@@ -1,4 +1,6 @@
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -51,13 +53,16 @@ public class TicketExportResult
         public string TicketType { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("assigned_at")]
-        public string AssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? AssignedAt { get; set; }
 
         [JsonProperty("organization_name")]
         public string OrganizationName { get; set; }
@@ -66,10 +71,12 @@ public class TicketExportResult
         public object DueDate { get; set; }
 
         [JsonProperty("initially_assigned_at")]
-        public string InitiallyAssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? InitiallyAssignedAt { get; set; }
 
         [JsonProperty("solved_at")]
-        public string SolvedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? SolvedAt { get; set; }
 
         [JsonProperty("resolution_time")]
         public string ResolutionTime { get; set; }
@@ -131,4 +138,4 @@ public class TicketExportResult
         [JsonProperty("url")]
         public string Url { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Tickets/TicketField.cs b/ZendeskApi_v2/Models/Tickets/TicketField.cs
index a3f87ee9..eebad542 100644
--- a/ZendeskApi_v2/Models/Tickets/TicketField.cs
+++ b/ZendeskApi_v2/Models/Tickets/TicketField.cs
@@ -1,5 +1,7 @@
+using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -62,10 +64,12 @@ public class TicketField : TicketFieldBase
         public string Url { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
 
     public  class CustomFieldOptions
@@ -76,4 +80,4 @@ public  class CustomFieldOptions
         [JsonProperty("value")]
         public string Value { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Tickets/TicketForm.cs b/ZendeskApi_v2/Models/Tickets/TicketForm.cs
index 9c619158..761c64e4 100644
--- a/ZendeskApi_v2/Models/Tickets/TicketForm.cs
+++ b/ZendeskApi_v2/Models/Tickets/TicketForm.cs
@@ -1,5 +1,7 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -34,9 +36,11 @@ public class TicketForm
         public bool Default { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/ZendeskApi_v2/Models/Tickets/TicketMetric.cs b/ZendeskApi_v2/Models/Tickets/TicketMetric.cs
index aeff151b..0b477f67 100644
--- a/ZendeskApi_v2/Models/Tickets/TicketMetric.cs
+++ b/ZendeskApi_v2/Models/Tickets/TicketMetric.cs
@@ -1,4 +1,6 @@
-using Newtonsoft.Json;
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Tickets
 {
@@ -20,25 +22,32 @@ public class TicketMetric : BaseTicket
         public long? Replies { get; set; }
 
         [JsonProperty("assignee_updated_at")]
-        public string AssigneeUpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? AssigneeUpdatedAt { get; set; }
 
         [JsonProperty("requester_updated_at")]
-        public string RequesterUpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? RequesterUpdatedAt { get; set; }
 
         [JsonProperty("status_updated_at")]
-        public string StatusUpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? StatusUpdatedAt { get; set; }
 
         [JsonProperty("initially_assigned_at")]
-        public string InitiallyAssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? InitiallyAssignedAt { get; set; }
 
         [JsonProperty("assigned_at")]
-        public string AssignedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? AssignedAt { get; set; }
 
         [JsonProperty("solved_at")]
-        public string SolvedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? SolvedAt { get; set; }
 
         [JsonProperty("latest_comment_added_at")]
-        public string LatestCommentAddedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? LatestCommentAddedAt { get; set; }
 
         [JsonProperty("first_resolution_time_in_minutes")]
         public TimeSpanMetric FirstResolutionTimeInMinutes { get; set; }
diff --git a/ZendeskApi_v2/Models/Topics/Topic.cs b/ZendeskApi_v2/Models/Topics/Topic.cs
index 330e118c..93573a45 100644
--- a/ZendeskApi_v2/Models/Topics/Topic.cs
+++ b/ZendeskApi_v2/Models/Topics/Topic.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 using ZendeskApi_v2.Models.Shared;
 
@@ -60,10 +61,12 @@ public class Topic
         public int CommentsCount { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
         
         /// <summary>
         /// Used for uploading Topics only
diff --git a/ZendeskApi_v2/Models/Topics/TopicComment.cs b/ZendeskApi_v2/Models/Topics/TopicComment.cs
index f4808f39..d035a9a4 100644
--- a/ZendeskApi_v2/Models/Topics/TopicComment.cs
+++ b/ZendeskApi_v2/Models/Topics/TopicComment.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 using ZendeskApi_v2.Models.Shared;
 
@@ -32,10 +33,12 @@ public class TopicComment
         public IList<Attachment> Attachments { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
         
         /// <summary>
         /// Used for uploading attachments only
diff --git a/ZendeskApi_v2/Models/Topics/TopicSubscription.cs b/ZendeskApi_v2/Models/Topics/TopicSubscription.cs
index 0231c9ae..a85e59b7 100644
--- a/ZendeskApi_v2/Models/Topics/TopicSubscription.cs
+++ b/ZendeskApi_v2/Models/Topics/TopicSubscription.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Topics
@@ -21,6 +22,7 @@ public class TopicSubscription
         public long UserId { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Topics/TopicVote.cs b/ZendeskApi_v2/Models/Topics/TopicVote.cs
index 977f62e6..6558c984 100644
--- a/ZendeskApi_v2/Models/Topics/TopicVote.cs
+++ b/ZendeskApi_v2/Models/Topics/TopicVote.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Topics
@@ -21,6 +22,7 @@ public class TopicVote
         public long TopicId { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Triggers/Trigger.cs b/ZendeskApi_v2/Models/Triggers/Trigger.cs
index c2d2bb85..0207c29e 100644
--- a/ZendeskApi_v2/Models/Triggers/Trigger.cs
+++ b/ZendeskApi_v2/Models/Triggers/Trigger.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Triggers
@@ -25,10 +26,12 @@ public class Trigger
         public bool Active { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("actions")]
         public IList<Action> Actions { get; set; }
diff --git a/ZendeskApi_v2/Models/Users/User.cs b/ZendeskApi_v2/Models/Users/User.cs
index a30fba47..1ab5b407 100644
--- a/ZendeskApi_v2/Models/Users/User.cs
+++ b/ZendeskApi_v2/Models/Users/User.cs
@@ -3,6 +3,7 @@
 using System.Linq;
 using System.Text;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Users
 {
@@ -24,10 +25,12 @@ public class User
         public string Alias { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+		[JsonConverter(typeof(IsoDateTimeConverter))]
+                public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+		[JsonConverter(typeof(IsoDateTimeConverter))]
+                public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("active")]
         public bool? Active { get; set; }
@@ -45,7 +48,8 @@ public class User
         public string TimeZone { get; set; }
 
         [JsonProperty("last_login_at")]
-        public string LastLoginAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? LastLoginAt { get; set; }
 
         [JsonProperty("email")]
         public string Email { get; set; }
diff --git a/ZendeskApi_v2/Models/Users/UserIdentity.cs b/ZendeskApi_v2/Models/Users/UserIdentity.cs
index 2e7bf80a..9aacfb1f 100644
--- a/ZendeskApi_v2/Models/Users/UserIdentity.cs
+++ b/ZendeskApi_v2/Models/Users/UserIdentity.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Linq;
 
 namespace ZendeskApi_v2.Models.Users
@@ -31,9 +32,11 @@ public class UserIdentity
         public bool Primary { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
     }
 }
diff --git a/ZendeskApi_v2/Models/Views/Executed/LastComment.cs b/ZendeskApi_v2/Models/Views/Executed/LastComment.cs
index f953654a..82de761e 100644
--- a/ZendeskApi_v2/Models/Views/Executed/LastComment.cs
+++ b/ZendeskApi_v2/Models/Views/Executed/LastComment.cs
@@ -1,7 +1,9 @@
 // JSON C# Class Generator
 // http://at-my-window.blogspot.com/?page=json-class-generator
 
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Views.Executed
 {
@@ -13,7 +15,8 @@ public class LastComment
         public string Body { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("author_id")]
         public long AuthorId { get; set; }
diff --git a/ZendeskApi_v2/Models/Views/View.cs b/ZendeskApi_v2/Models/Views/View.cs
index 4d784363..a200052e 100644
--- a/ZendeskApi_v2/Models/Views/View.cs
+++ b/ZendeskApi_v2/Models/Views/View.cs
@@ -1,7 +1,9 @@
 // JSON C# Class Generator
 // http://at-my-window.blogspot.com/?page=json-class-generator
 
+using System;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ZendeskApi_v2.Models.Views
 {
@@ -22,10 +24,12 @@ public class View
         public bool Active { get; set; }
 
         [JsonProperty("updated_at")]
-        public string UpdatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? UpdatedAt { get; set; }
 
         [JsonProperty("created_at")]
-        public string CreatedAt { get; set; }
+        [JsonConverter(typeof(IsoDateTimeConverter))]
+        public DateTimeOffset? CreatedAt { get; set; }
 
         [JsonProperty("restriction")]
         public object Restriction { get; set; }