diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e6cc28..c21169a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,10 +2,17 @@
 
 ## [Unreleased](https://github.com/Dynatrace/openkit-dotnet/compare/v3.2.0...HEAD)
 
+### Added
+
+- `IWebRequestTracer.SetBytesSent(long bytes)` to increase the size range
+- `IWebRequestTracer.SetBytesReceived(long bytes)` to increase the size range
+
 ### Changed
 
 - `HttpClientWebClient` for NET3.5 is now using User-Agent property directly
 - Improved cancelation or disposal of childs when leaving an action
+- Deprecated `IWebRequestTracer.SetBytesSent(int bytes)` due to datatype limitations
+- Deprecated `IWebRequestTracer.SetBytesReceived(int bytes)` due to datatype limitations
 
 ## 3.2.0 [Release date: 2023-12-06]
 [GitHub Releases](https://github.com/Dynatrace/openkit-dotnet/releases/tag/v3.2.0)
diff --git a/src/Dynatrace.OpenKit/API/IWebRequestTracer.cs b/src/Dynatrace.OpenKit/API/IWebRequestTracer.cs
index 0d7140c..132aebf 100644
--- a/src/Dynatrace.OpenKit/API/IWebRequestTracer.cs
+++ b/src/Dynatrace.OpenKit/API/IWebRequestTracer.cs
@@ -48,14 +48,30 @@ public interface IWebRequestTracer : IDisposable
         /// </summary>
         /// <param name="bytesSent">number of bytes sent by the web request</param>
         /// <returns></returns>
+        [Obsolete("Use SetBytesSent(long) instead")]
         IWebRequestTracer SetBytesSent(int bytesSent);
 
+        /// <summary>
+        /// Sets the amount of sent bytes of the web request
+        /// </summary>
+        /// <param name="bytesSent">number of bytes sent by the web request</param>
+        /// <returns></returns>
+        IWebRequestTracer SetBytesSent(long bytesSent);
+
         /// <summary>
         /// Sets the amount of received bytes of the web request
         /// </summary>
         /// <param name="bytesReceived">number of bytes received by the web request</param>
         /// <returns></returns>
+        [Obsolete("Use SetBytesReceived(long) instead")]
         IWebRequestTracer SetBytesReceived(int bytesReceived);
+
+        /// <summary>
+        /// Sets the amount of received bytes of the web request
+        /// </summary>
+        /// <param name="bytesReceived">number of bytes received by the web request</param>
+        /// <returns></returns>
+        IWebRequestTracer SetBytesReceived(long bytesReceived);
     }
 
 }
diff --git a/src/Dynatrace.OpenKit/Core/Objects/IWebRequestTracerInternals.cs b/src/Dynatrace.OpenKit/Core/Objects/IWebRequestTracerInternals.cs
index 4d4cfa4..0f9f12f 100644
--- a/src/Dynatrace.OpenKit/Core/Objects/IWebRequestTracerInternals.cs
+++ b/src/Dynatrace.OpenKit/Core/Objects/IWebRequestTracerInternals.cs
@@ -61,12 +61,12 @@ internal interface IWebRequestTracerInternals : IWebRequestTracer, ICancelableOp
         /// <summary>
         /// The number of bytes sent
         /// </summary>
-        int BytesSent { get; }
+        long BytesSent { get; }
 
         /// <summary>
         /// The number of received bytes
         /// </summary>
-        int BytesReceived { get; }
+        long BytesReceived { get; }
 
         /// <summary>
         /// Indicates whether this <see cref="IWebRequestTracer"/> was <see cref="IWebRequestTracer.Stop(int)">stopped</see>
diff --git a/src/Dynatrace.OpenKit/Core/Objects/NullWebRequestTracer.cs b/src/Dynatrace.OpenKit/Core/Objects/NullWebRequestTracer.cs
index bbe1bea..9625173 100644
--- a/src/Dynatrace.OpenKit/Core/Objects/NullWebRequestTracer.cs
+++ b/src/Dynatrace.OpenKit/Core/Objects/NullWebRequestTracer.cs
@@ -43,12 +43,21 @@ public IWebRequestTracer SetBytesReceived(int bytesReceived)
         {
             return this;
         }
+        public IWebRequestTracer SetBytesReceived(long bytesReceived)
+        {
+            return this;
+        }
 
         public IWebRequestTracer SetBytesSent(int bytesSent)
         {
             return this;
         }
 
+        public IWebRequestTracer SetBytesSent(long bytesSent)
+        {
+            return this;
+        }  
+
         public IWebRequestTracer Start()
         {
             return this;
diff --git a/src/Dynatrace.OpenKit/Core/Objects/WebRequestTracer.cs b/src/Dynatrace.OpenKit/Core/Objects/WebRequestTracer.cs
index f0243d1..f695ffb 100644
--- a/src/Dynatrace.OpenKit/Core/Objects/WebRequestTracer.cs
+++ b/src/Dynatrace.OpenKit/Core/Objects/WebRequestTracer.cs
@@ -131,9 +131,9 @@ internal static bool IsValidUrlScheme(string url)
 
         public int ResponseCode { get; private set; } = -1;
 
-        public int BytesSent { get; private set; } = -1;
+        public long BytesSent { get; private set; } = -1;
 
-        public int BytesReceived { get; private set; } = -1;
+        public long BytesReceived { get; private set; } = -1;
 
         bool IWebRequestTracerInternals.IsStopped => EndTime != -1;
 
@@ -215,6 +215,11 @@ private void DoStop(int responseCode, bool discardData)
         }
 
         public IWebRequestTracer SetBytesSent(int bytesSent)
+        {
+            return SetBytesSent((long) bytesSent);
+        }
+
+        public IWebRequestTracer SetBytesSent(long bytesSent)
         {
             lock (lockObject)
             {
@@ -228,6 +233,11 @@ public IWebRequestTracer SetBytesSent(int bytesSent)
         }
 
         public IWebRequestTracer SetBytesReceived(int bytesReceived)
+        {
+            return SetBytesReceived((long) bytesReceived);
+        }
+
+        public IWebRequestTracer SetBytesReceived(long bytesReceived)
         {
             lock (lockObject)
             {
diff --git a/src/Dynatrace.OpenKit/Protocol/Beacon.cs b/src/Dynatrace.OpenKit/Protocol/Beacon.cs
index 2ab70cc..39c2f5e 100644
--- a/src/Dynatrace.OpenKit/Protocol/Beacon.cs
+++ b/src/Dynatrace.OpenKit/Protocol/Beacon.cs
@@ -1087,6 +1087,24 @@ private static void AddKeyValuePairIfNotNegative(StringBuilder builder, string k
             }
         }
 
+        /// <summary>
+        /// Serialization helper method for adding key/value pairs with int values.
+        ///
+        /// <para>
+        /// The key value pair is only added if the given <paramref name="intValue"/> is not negative.
+        /// </para>
+        /// </summary>
+        /// <param name="builder"></param>
+        /// <param name="key"></param>
+        /// <param name="intValue"></param>
+        private static void AddKeyValuePairIfNotNegative(StringBuilder builder, string key, long longValue)
+        {
+            if (longValue >= 0)
+            {
+                AddKeyValuePair(builder, key, longValue);
+            }
+        }
+
         // helper method for adding key/value pairs with double values
         private static void AddKeyValuePair(StringBuilder builder, string key, double doubleValue)
         {
diff --git a/tests/Dynatrace.OpenKit.Tests/Core/Objects/NullWebRequestTracerTest.cs b/tests/Dynatrace.OpenKit.Tests/Core/Objects/NullWebRequestTracerTest.cs
index fd73d67..c6ba613 100644
--- a/tests/Dynatrace.OpenKit.Tests/Core/Objects/NullWebRequestTracerTest.cs
+++ b/tests/Dynatrace.OpenKit.Tests/Core/Objects/NullWebRequestTracerTest.cs
@@ -46,6 +46,19 @@ public void SetBytesSentReturnsSelf()
             Assert.That(obtained, Is.SameAs(target));
         }
 
+        [Test]
+        public void SetBytesSentLongReturnsSelf()
+        {
+            // given
+            var target = NullWebRequestTracer.Instance;
+
+            // when
+            var obtained = target.SetBytesSent(37L);
+
+            // then
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
         [Test]
         public void SetBytesReceivedReturnsSelf()
         {
@@ -59,6 +72,19 @@ public void SetBytesReceivedReturnsSelf()
             Assert.That(obtained, Is.SameAs(target));
         }
 
+        [Test]
+        public void SetBytesReceivedLongReturnsSelf()
+        {
+            // given
+            var target = NullWebRequestTracer.Instance;
+
+            // when
+            var obtained = target.SetBytesReceived(73L);
+
+            // then
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
         [Test]
         public void StartReturnsSelf()
         {
diff --git a/tests/Dynatrace.OpenKit.Tests/Core/Objects/WebRequestTracerTest.cs b/tests/Dynatrace.OpenKit.Tests/Core/Objects/WebRequestTracerTest.cs
index df3f658..5ea6414 100644
--- a/tests/Dynatrace.OpenKit.Tests/Core/Objects/WebRequestTracerTest.cs
+++ b/tests/Dynatrace.OpenKit.Tests/Core/Objects/WebRequestTracerTest.cs
@@ -137,7 +137,7 @@ public void SetBytesSentSetsTheNumberOfSentBytes()
             var obtained = target.SetBytesSent(1234);
 
             // then
-            Assert.That(target.BytesSent, Is.EqualTo(1234));
+            Assert.That(target.BytesSent, Is.EqualTo(1234L));
             Assert.That(obtained, Is.SameAs(target));
         }
 
@@ -152,7 +152,36 @@ public void SetBytesSentDoesNotSetAnythingIfStoppedWithResponseCode()
             var obtained = target.SetBytesSent(1234);
 
             // then
-            Assert.That(target.BytesSent, Is.EqualTo(-1));
+            Assert.That(target.BytesSent, Is.EqualTo(-1L));
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
+        [Test]
+        public void SetBytesSentLongSetsTheNumberOfSentBytes()
+        {
+            // given
+            var target = CreateWebRequestTracer().Build();
+
+            // when setting the sent bytes
+            var obtained = target.SetBytesSent(1234L);
+
+            // then
+            Assert.That(target.BytesSent, Is.EqualTo(1234L));
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
+        [Test]
+        public void SetBytesSentLongDoesNotSetAnythingIfStoppedWithResponseCode()
+        {
+            // given
+            var target = CreateWebRequestTracer().Build();
+            target.Stop(200);
+
+            // when setting the sent bytes
+            var obtained = target.SetBytesSent(1234L);
+
+            // then
+            Assert.That(target.BytesSent, Is.EqualTo(-1L));
             Assert.That(obtained, Is.SameAs(target));
         }
 
@@ -166,7 +195,7 @@ public void SetBytesReceivedSetsTheNumberOfReceivedBytes()
             var obtained = target.SetBytesReceived(4321);
 
             // then
-            Assert.That(target.BytesReceived, Is.EqualTo(4321));
+            Assert.That(target.BytesReceived, Is.EqualTo(4321L));
             Assert.That(obtained, Is.SameAs(target));
         }
 
@@ -181,7 +210,36 @@ public void SetBytesReceivedDoesNotSetAnythingIfStoppedWithResponseCode()
             var obtained = target.SetBytesReceived(4321);
 
             // then
-            Assert.That(target.BytesReceived, Is.EqualTo(-1));
+            Assert.That(target.BytesReceived, Is.EqualTo(-1L));
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
+        [Test]
+        public void SetBytesReceivedLongSetsTheNumberOfReceivedBytes()
+        {
+            // given
+            var target = CreateWebRequestTracer().Build();
+
+            // when setting the received bytes
+            var obtained = target.SetBytesReceived(4321L);
+
+            // then
+            Assert.That(target.BytesReceived, Is.EqualTo(4321L));
+            Assert.That(obtained, Is.SameAs(target));
+        }
+
+        [Test]
+        public void SetBytesReceivedLongDoesNotSetAnythingIfStoppedWithResponseCode()
+        {
+            // given
+            var target = CreateWebRequestTracer().Build();
+            target.Stop(200);
+
+            // when setting the received bytes
+            var obtained = target.SetBytesReceived(4321L);
+
+            // then
+            Assert.That(target.BytesReceived, Is.EqualTo(-1L));
             Assert.That(obtained, Is.SameAs(target));
         }
 
diff --git a/tests/Dynatrace.OpenKit.Tests/Protocol/BeaconTest.cs b/tests/Dynatrace.OpenKit.Tests/Protocol/BeaconTest.cs
index e2969fb..9406233 100644
--- a/tests/Dynatrace.OpenKit.Tests/Protocol/BeaconTest.cs
+++ b/tests/Dynatrace.OpenKit.Tests/Protocol/BeaconTest.cs
@@ -3193,8 +3193,8 @@ public void AddWebRequest()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 1337;
-            const int receivedBytes = 1447;
+            const long sentBytes = 1337;
+            const long receivedBytes = 1447;
             const int responseCode = 418;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3268,8 +3268,8 @@ public void CanAddSentBytesEqualToZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 0;
-            const int receivedBytes = 1447;
+            const long sentBytes = 0;
+            const long receivedBytes = 1447;
             const int responseCode = 418;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3304,8 +3304,8 @@ public void CannnotAddSentBytesLessThanZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = -1;
-            const int receivedBytes = 1447;
+            const long sentBytes = -1;
+            const long receivedBytes = 1447;
             const int responseCode = 418;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3339,8 +3339,8 @@ public void CanAddReceivedBytesEqualToZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 1337;
-            const int receivedBytes = 0;
+            const long sentBytes = 1337;
+            const long receivedBytes = 0;
             const int responseCode = 418;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3375,8 +3375,8 @@ public void CannnotAddReceivedBytesLessThanZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 1337;
-            const int receivedBytes = -1;
+            const long sentBytes = 1337;
+            const long receivedBytes = -1;
             const int responseCode = 418;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3410,8 +3410,8 @@ public void CanAddResponseCodeEqualToZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 1337;
-            const int receivedBytes = 1447;
+            const long sentBytes = 1337;
+            const long receivedBytes = 1447;
             const int responseCode = 0;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);
@@ -3446,8 +3446,8 @@ public void CannnotAddResponseCodeLessThanZeroToWebRequestTracer()
             // given
             var target = CreateBeacon().Build();
 
-            const int sentBytes = 1337;
-            const int receivedBytes = 1447;
+            const long sentBytes = 1337;
+            const long receivedBytes = 1447;
             const int responseCode = -1;
             var tracer = Substitute.For<IWebRequestTracerInternals>();
             tracer.Url.Returns(Url);