diff --git a/sample/Sample/Sample.csproj b/sample/Sample/Sample.csproj
index f455830..ea77fd8 100644
--- a/sample/Sample/Sample.csproj
+++ b/sample/Sample/Sample.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
-    <PackageReference Include="Serilog" Version="3.1.1" />
+    <PackageReference Include="Serilog" Version="4.0.0" />
     <PackageReference Include="Serilog.Extensions.Hosting" Version="8.0.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="8.0.0" />
diff --git a/src/Serilog.Sinks.Splunk/Serilog.Sinks.Splunk.csproj b/src/Serilog.Sinks.Splunk/Serilog.Sinks.Splunk.csproj
index 70e704f..399996f 100644
--- a/src/Serilog.Sinks.Splunk/Serilog.Sinks.Splunk.csproj
+++ b/src/Serilog.Sinks.Splunk/Serilog.Sinks.Splunk.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <Import Project="../common.props"/>
+  <Import Project="../common.props" />
   
   <PropertyGroup>
     <Description>The Splunk Sink for Serilog</Description>
@@ -18,8 +18,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Serilog" Version="3.1.1" />
-    <PackageReference Include="Serilog.Sinks.PeriodicBatching" Version="4.1.1" />
+    <PackageReference Include="Serilog" Version="4.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CompactSplunkJsonFormatter.cs b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CompactSplunkJsonFormatter.cs
index 7b56f49..b587b8d 100644
--- a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CompactSplunkJsonFormatter.cs
+++ b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CompactSplunkJsonFormatter.cs
@@ -17,7 +17,6 @@
 using Serilog.Formatting.Json;
 using Serilog.Parsing;
 using System;
-using System.Globalization;
 using System.IO;
 using System.Linq;
 
diff --git a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomField.cs b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomField.cs
index 85ed968..b3d2908 100644
--- a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomField.cs
+++ b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomField.cs
@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Collections.Generic;
 
 namespace Serilog.Sinks.Splunk
 { /// <summary>
diff --git a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomFields.cs b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomFields.cs
index aa072d8..0e875c9 100644
--- a/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomFields.cs
+++ b/src/Serilog.Sinks.Splunk/Sinks/Splunk/CustomFields.cs
@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Collections.Generic;
 
 namespace Serilog.Sinks.Splunk
 {
diff --git a/src/Serilog.Sinks.Splunk/Sinks/Splunk/EventCollectorSink.cs b/src/Serilog.Sinks.Splunk/Sinks/Splunk/EventCollectorSink.cs
index 6f455f5..91bb299 100644
--- a/src/Serilog.Sinks.Splunk/Sinks/Splunk/EventCollectorSink.cs
+++ b/src/Serilog.Sinks.Splunk/Sinks/Splunk/EventCollectorSink.cs
@@ -12,10 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+using Serilog.Core;
 using Serilog.Debugging;
 using Serilog.Events;
 using Serilog.Formatting;
-using Serilog.Sinks.PeriodicBatching;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -177,15 +177,15 @@ public EventCollectorSink(
                 : new EventCollectorClient(eventCollectorToken);
         }
 
-        /// <summary>
-        ///     Emit a batch of log events, running asynchronously.
-        /// </summary>
-        /// <param name="events">The events to emit.</param>
-        public virtual async Task EmitBatchAsync(IEnumerable<LogEvent> events)
+        /// <inheritdoc />
+        public virtual Task OnEmptyBatchAsync() => Task.CompletedTask;
+
+        /// <inheritdoc />
+        public virtual async Task EmitBatchAsync(IReadOnlyCollection<LogEvent> batch)
         {
             var allEvents = new StringWriter();
 
-            foreach (var logEvent in events)
+            foreach (var logEvent in batch)
             {
                 _jsonFormatter.Format(logEvent, allEvents);
             }
@@ -210,8 +210,5 @@ public virtual async Task EmitBatchAsync(IEnumerable<LogEvent> events)
                 }
             }
         }
-
-        /// <inheritdoc />
-        public Task OnEmptyBatchAsync() => Task.CompletedTask;
     }
 }
diff --git a/src/Serilog.Sinks.Splunk/Sinks/Splunk/SplunkJsonFormatter.cs b/src/Serilog.Sinks.Splunk/Sinks/Splunk/SplunkJsonFormatter.cs
index ef03c47..9926c24 100644
--- a/src/Serilog.Sinks.Splunk/Sinks/Splunk/SplunkJsonFormatter.cs
+++ b/src/Serilog.Sinks.Splunk/Sinks/Splunk/SplunkJsonFormatter.cs
@@ -17,7 +17,6 @@
 using Serilog.Formatting.Json;
 using System;
 using System.Collections.Generic;
-using System.Globalization;
 using System.IO;
 
 namespace Serilog.Sinks.Splunk
diff --git a/src/Serilog.Sinks.Splunk/SplunkLoggingConfigurationExtensions.cs b/src/Serilog.Sinks.Splunk/SplunkLoggingConfigurationExtensions.cs
index 861ae25..04dc1c9 100644
--- a/src/Serilog.Sinks.Splunk/SplunkLoggingConfigurationExtensions.cs
+++ b/src/Serilog.Sinks.Splunk/SplunkLoggingConfigurationExtensions.cs
@@ -17,7 +17,6 @@
 using Serilog.Core;
 using Serilog.Events;
 using Serilog.Formatting;
-using Serilog.Sinks.PeriodicBatching;
 using Serilog.Sinks.Splunk;
 using System;
 using System.Net.Http;
@@ -73,10 +72,10 @@ public static LoggerConfiguration EventCollector(
         {
             if (configuration == null) throw new ArgumentNullException(nameof(configuration));
 
-            var batchingOptions = new PeriodicBatchingSinkOptions
+            var batchingOptions = new BatchingOptions
             {
                 BatchSizeLimit = batchSizeLimit,
-                Period = TimeSpan.FromSeconds(batchIntervalInSeconds),
+                BufferingTimeLimit = TimeSpan.FromSeconds(batchIntervalInSeconds),
                 EagerlyEmitFirstEvent = true,
                 QueueLimit = queueLimit
             };
@@ -95,9 +94,7 @@ public static LoggerConfiguration EventCollector(
                 messageHandler: messageHandler,
                 subSecondPrecision: subSecondPrecision);
 
-            var batchingSink = new PeriodicBatchingSink(eventCollectorSink, batchingOptions);
-
-            return configuration.Sink(batchingSink, restrictedToMinimumLevel, levelSwitch);
+            return configuration.Sink(eventCollectorSink, batchingOptions, restrictedToMinimumLevel, levelSwitch);
         }
 
         /// <summary>
@@ -132,10 +129,10 @@ public static LoggerConfiguration EventCollector(
             if (jsonFormatter == null) throw new ArgumentNullException(nameof(jsonFormatter));
 
 
-            var batchingOptions = new PeriodicBatchingSinkOptions
+            var batchingOptions = new BatchingOptions
             {
                 BatchSizeLimit = batchSizeLimit,
-                Period = TimeSpan.FromSeconds(batchIntervalInSeconds),
+                BufferingTimeLimit = TimeSpan.FromSeconds(batchIntervalInSeconds),
                 EagerlyEmitFirstEvent = true,
                 QueueLimit = queueLimit
             };
@@ -147,9 +144,7 @@ public static LoggerConfiguration EventCollector(
                 jsonFormatter,
                 messageHandler);
 
-            var batchingSink = new PeriodicBatchingSink(eventCollectorSink, batchingOptions);
-
-            return configuration.Sink(batchingSink, restrictedToMinimumLevel, levelSwitch);
+            return configuration.Sink(eventCollectorSink, batchingOptions, restrictedToMinimumLevel, levelSwitch);
         }
 
 
@@ -199,10 +194,10 @@ public static LoggerConfiguration EventCollector(
         {
             if (configuration == null) throw new ArgumentNullException(nameof(configuration));
 
-            var batchingOptions = new PeriodicBatchingSinkOptions
+            var batchingOptions = new BatchingOptions
             {
                 BatchSizeLimit = batchSizeLimit,
-                Period = TimeSpan.FromSeconds(batchIntervalInSeconds),
+                BufferingTimeLimit = TimeSpan.FromSeconds(batchIntervalInSeconds),
                 EagerlyEmitFirstEvent = true,
                 QueueLimit = queueLimit
             };
@@ -223,10 +218,7 @@ public static LoggerConfiguration EventCollector(
                subSecondPrecision: subSecondPrecision
                );
 
-
-            var batchingSink = new PeriodicBatchingSink(eventCollectorSink, batchingOptions);
-
-            return configuration.Sink(batchingSink, restrictedToMinimumLevel, levelSwitch);
+            return configuration.Sink(eventCollectorSink, batchingOptions, restrictedToMinimumLevel, levelSwitch);
         }
     }
 }
diff --git a/src/Serilog.Sinks.UDP/Sinks/Splunk/UdpSink.cs b/src/Serilog.Sinks.UDP/Sinks/Splunk/UdpSink.cs
index 7ce99a2..f5d4c14 100644
--- a/src/Serilog.Sinks.UDP/Sinks/Splunk/UdpSink.cs
+++ b/src/Serilog.Sinks.UDP/Sinks/Splunk/UdpSink.cs
@@ -21,7 +21,6 @@
 using System.Net.Sockets;
 using System.Text;
 using System.Threading.Tasks;
-using Serilog.Sinks.PeriodicBatching;
 
 namespace Serilog.Sinks.Splunk
 {
@@ -95,7 +94,7 @@ private void DisposeSocket()
         ///  or <see cref="M:Serilog.Sinks.PeriodicBatching.PeriodicBatchingSink.EmitBatchAsync(System.Collections.Generic.IEnumerable{Serilog.Events.LogEvent})" />,
         /// not both.
         /// </remarks>
-        public async Task EmitBatchAsync(IEnumerable<LogEvent> batch)
+        public async Task EmitBatchAsync(IReadOnlyCollection<LogEvent> batch)
         {
             foreach (var logEvent in batch)
             {
diff --git a/src/Serilog.Sinks.UDP/SplunkLoggingConfigurationExtensions.cs b/src/Serilog.Sinks.UDP/SplunkLoggingConfigurationExtensions.cs
index 1ec70ee..737af66 100644
--- a/src/Serilog.Sinks.UDP/SplunkLoggingConfigurationExtensions.cs
+++ b/src/Serilog.Sinks.UDP/SplunkLoggingConfigurationExtensions.cs
@@ -15,7 +15,6 @@
 using Serilog.Configuration;
 using Serilog.Events;
 using Serilog.Formatting;
-using Serilog.Sinks.PeriodicBatching;
 using Serilog.Sinks.Splunk;
 using System;
 
@@ -44,19 +43,17 @@ public static LoggerConfiguration SplunkViaUdp(
             bool renderTemplate = true,
             bool renderMessage = true)
         {
-            var batchingOptions = new PeriodicBatchingSinkOptions
+            var batchingOptions = new BatchingOptions
             {
                 BatchSizeLimit = connectionInfo.BatchPostingLimit,
-                Period = connectionInfo.Period,
+                BufferingTimeLimit = connectionInfo.Period,
                 EagerlyEmitFirstEvent = true,
                 QueueLimit = connectionInfo.QueueSizeLimit
             };
 
             var sink = new UdpSink(connectionInfo, formatProvider, renderTemplate, renderMessage);
 
-            var batchingSink = new PeriodicBatchingSink(sink, batchingOptions);
-
-            return loggerConfiguration.Sink(batchingSink, restrictedToMinimumLevel);
+            return loggerConfiguration.Sink(sink, batchingOptions, restrictedToMinimumLevel);
         }
 
         /// <summary>
@@ -73,19 +70,17 @@ public static LoggerConfiguration SplunkViaUdp(
             ITextFormatter formatter,
             LogEventLevel restrictedToMinimumLevel = LevelAlias.Minimum)
         {
-            var batchingOptions = new PeriodicBatchingSinkOptions
+            var batchingOptions = new BatchingOptions
             {
                 BatchSizeLimit = connectionInfo.BatchPostingLimit,
-                Period = connectionInfo.Period,
+                BufferingTimeLimit = connectionInfo.Period,
                 EagerlyEmitFirstEvent = true,
                 QueueLimit = connectionInfo.QueueSizeLimit
             };
 
             var sink = new UdpSink(connectionInfo, formatter);
 
-            var batchingSink = new PeriodicBatchingSink(sink, batchingOptions);
-
-            return loggerConfiguration.Sink(batchingSink, restrictedToMinimumLevel);
+            return loggerConfiguration.Sink(sink, batchingOptions, restrictedToMinimumLevel);
         }
     }
 }
diff --git a/src/common.props b/src/common.props
index 0d14599..b0442c9 100644
--- a/src/common.props
+++ b/src/common.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
-    <VersionPrefix Condition=" '$(VersionPrefix)' == '' ">4.1.1</VersionPrefix>
+    <VersionPrefix Condition=" '$(VersionPrefix)' == '' ">5.0.0</VersionPrefix>
     <VersionSuffix Condition="$(VersionSuffix) == '' and '$(Configuration)' == 'Debug' ">debug</VersionSuffix>
     <Authors>Matthew Erbs, Serilog Contributors</Authors>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/test/Serilog.Sinks.Splunk.TCP.Tests/TCPCollectorTests.cs b/test/Serilog.Sinks.Splunk.TCP.Tests/TCPCollectorTests.cs
index e66210a..293e5c9 100644
--- a/test/Serilog.Sinks.Splunk.TCP.Tests/TCPCollectorTests.cs
+++ b/test/Serilog.Sinks.Splunk.TCP.Tests/TCPCollectorTests.cs
@@ -1,12 +1,6 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Net;
-using System.Net.NetworkInformation;
 using System.Net.Sockets;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
 using Serilog.Events;
 using Xunit;
 
diff --git a/test/Serilog.Sinks.Splunk.Tests/EpochExtensionsTests.cs b/test/Serilog.Sinks.Splunk.Tests/EpochExtensionsTests.cs
index 8bbfca5..cb52067 100644
--- a/test/Serilog.Sinks.Splunk.Tests/EpochExtensionsTests.cs
+++ b/test/Serilog.Sinks.Splunk.Tests/EpochExtensionsTests.cs
@@ -1,6 +1,4 @@
-using Serilog.Sinks.Splunk;
-using System;
-using System.Diagnostics;
+using System;
 using Xunit;
 
 namespace Serilog.Sinks.Splunk.Tests