diff --git a/src/ReportPortal.Client/Abstractions/Requests/CreateLogItemRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/CreateLogItemRequest.cs
index 36306e9f..a200b4fe 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/CreateLogItemRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/CreateLogItemRequest.cs
@@ -24,7 +24,6 @@ public class CreateLogItemRequest
         /// <summary>
         /// Date time of log item.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime Time { get; set; } = DateTime.UtcNow;
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Requests/FinishLaunchRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/FinishLaunchRequest.cs
index bdb158bb..a7bad2a0 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/FinishLaunchRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/FinishLaunchRequest.cs
@@ -1,6 +1,4 @@
-using ReportPortal.Client.Converters;
-using System;
-using System.Text.Json.Serialization;
+using System;
 
 namespace ReportPortal.Client.Abstractions.Requests
 {
@@ -12,7 +10,6 @@ public class FinishLaunchRequest
         /// <summary>
         /// Gets or sets the date and time when the launch execution is finished.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime EndTime { get; set; } = DateTime.UtcNow;
     }
 }
diff --git a/src/ReportPortal.Client/Abstractions/Requests/FinishTestItemRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/FinishTestItemRequest.cs
index 19b53ee8..5412e533 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/FinishTestItemRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/FinishTestItemRequest.cs
@@ -20,7 +20,6 @@ public class FinishTestItemRequest
         /// <summary>
         /// Gets or sets the date and time when the test item is finished.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime EndTime { get; set; } = DateTime.UtcNow;
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Requests/MergeLaunchesRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/MergeLaunchesRequest.cs
index 774cf299..79627e20 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/MergeLaunchesRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/MergeLaunchesRequest.cs
@@ -30,13 +30,11 @@ public class MergeLaunchesRequest
         /// <summary>
         /// Gets or sets the date and time when the launch is executed.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime StartTime { get; set; }
 
         /// <summary>
         /// Gets or sets the date and time when the launch is finished.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime EndTime { get; set; }
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Requests/StartLaunchRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/StartLaunchRequest.cs
index fef20b54..0796f913 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/StartLaunchRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/StartLaunchRequest.cs
@@ -30,7 +30,6 @@ public class StartLaunchRequest
         /// <summary>
         /// Gets or sets the date and time when the launch is executed.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime StartTime { get; set; } = DateTime.UtcNow;
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Requests/StartTestItemRequest.cs b/src/ReportPortal.Client/Abstractions/Requests/StartTestItemRequest.cs
index 084ae58a..fab85254 100644
--- a/src/ReportPortal.Client/Abstractions/Requests/StartTestItemRequest.cs
+++ b/src/ReportPortal.Client/Abstractions/Requests/StartTestItemRequest.cs
@@ -29,7 +29,6 @@ public class StartTestItemRequest
         /// <summary>
         /// Date time when new test item is created.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime StartTime { get; set; } = DateTime.UtcNow;
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Responses/LaunchResponse.cs b/src/ReportPortal.Client/Abstractions/Responses/LaunchResponse.cs
index ee50d58c..5278a27c 100644
--- a/src/ReportPortal.Client/Abstractions/Responses/LaunchResponse.cs
+++ b/src/ReportPortal.Client/Abstractions/Responses/LaunchResponse.cs
@@ -45,13 +45,11 @@ public class LaunchResponse
         /// <summary>
         /// Gets or sets the start time of the launch.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime StartTime { get; set; }
 
         /// <summary>
         /// Gets or sets the end time of the launch.
         /// </summary>
-        [JsonConverter(typeof(NullableDateTimeUnixEpochConverter))]
         public DateTime? EndTime { get; set; }
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Responses/LogItemResponse.cs b/src/ReportPortal.Client/Abstractions/Responses/LogItemResponse.cs
index e750a2ed..aa5eea67 100644
--- a/src/ReportPortal.Client/Abstractions/Responses/LogItemResponse.cs
+++ b/src/ReportPortal.Client/Abstractions/Responses/LogItemResponse.cs
@@ -34,7 +34,6 @@ public class LogItemResponse
         /// <summary>
         /// Gets or sets the time when the log item was created.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime Time { get; set; }
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Abstractions/Responses/TestItemResponse.cs b/src/ReportPortal.Client/Abstractions/Responses/TestItemResponse.cs
index 9716d3f5..c62f621c 100644
--- a/src/ReportPortal.Client/Abstractions/Responses/TestItemResponse.cs
+++ b/src/ReportPortal.Client/Abstractions/Responses/TestItemResponse.cs
@@ -40,13 +40,11 @@ public class TestItemResponse
         /// <summary>
         /// Gets or sets the start time of the test item.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime StartTime { get; set; }
 
         /// <summary>
         /// Gets or sets the end time of the test item.
         /// </summary>
-        [JsonConverter(typeof(NullableDateTimeUnixEpochConverter))]
         public DateTime? EndTime { get; set; }
 
         /// <summary>
@@ -191,7 +189,6 @@ public class ExternalSystemIssue
         /// <summary>
         /// Gets or sets the submit date of the external system issue.
         /// </summary>
-        [JsonConverter(typeof(DateTimeUnixEpochConverter))]
         public DateTime SubmitDate { get; set; }
 
         /// <summary>
diff --git a/src/ReportPortal.Client/Converters/DateTimeUnixEpochConverter.cs b/src/ReportPortal.Client/Converters/DateTimeUnixEpochConverter.cs
deleted file mode 100644
index 9dd8872a..00000000
--- a/src/ReportPortal.Client/Converters/DateTimeUnixEpochConverter.cs
+++ /dev/null
@@ -1,44 +0,0 @@
-using System;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-namespace ReportPortal.Client.Converters
-{
-    sealed class DateTimeUnixEpochConverter : JsonConverter<DateTime>
-    {
-        private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
-
-        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            var unixTime = reader.GetInt64();
-
-            return UNIX_EPOCH.AddMilliseconds(unixTime);
-        }
-
-        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
-        {
-            var unixTime = Convert.ToInt64((value - UNIX_EPOCH).TotalMilliseconds);
-
-            writer.WriteNumberValue(unixTime);
-        }
-    }
-
-    sealed class NullableDateTimeUnixEpochConverter : JsonConverter<DateTime?>
-    {
-        private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
-
-        public override DateTime? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            var unixTime = reader.GetInt64();
-
-            return UNIX_EPOCH.AddMilliseconds(unixTime);
-        }
-
-        public override void Write(Utf8JsonWriter writer, DateTime? value, JsonSerializerOptions options)
-        {
-            var unixTime = Convert.ToInt64((value - UNIX_EPOCH).Value.TotalMilliseconds);
-
-            writer.WriteNumberValue(unixTime);
-        }
-    }
-}