diff --git a/Build/MQTTnet.AspNetCore.nuspec b/Build/MQTTnet.AspNetCore.nuspec
index a46cd81..d38efb1 100644
--- a/Build/MQTTnet.AspNetCore.nuspec
+++ b/Build/MQTTnet.AspNetCore.nuspec
@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>This is a support library to integrate MQTTnet into AspNetCore.</description>
     <releaseNotes>For release notes please go to MQTTnet release notes (https://www.nuget.org/packages/MQTTnet/).</releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags>
     <dependencies>
       <dependency id="MQTTnet" version="$nugetVersion" />
diff --git a/Build/MQTTnet.Extensions.ManagedClient.nuspec b/Build/MQTTnet.Extensions.ManagedClient.nuspec
index edec769..8ae373f 100644
--- a/Build/MQTTnet.Extensions.ManagedClient.nuspec
+++ b/Build/MQTTnet.Extensions.ManagedClient.nuspec
@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>This is an extension library which provides a managed MQTT client with additional features using MQTTnet.</description>
     <releaseNotes>For release notes please go to MQTTnet release notes (https://www.nuget.org/packages/MQTTnet/).</releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
       <dependency id="MQTTnet" version="$nugetVersion" />
diff --git a/Build/MQTTnet.Extensions.Rpc.nuspec b/Build/MQTTnet.Extensions.Rpc.nuspec
index ce81cb6..4089ae4 100644
--- a/Build/MQTTnet.Extensions.Rpc.nuspec
+++ b/Build/MQTTnet.Extensions.Rpc.nuspec
@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>This is an extension library which allows executing synchronous device calls including a response using MQTTnet.</description>
     <releaseNotes>For release notes please go to MQTTnet release notes (https://www.nuget.org/packages/MQTTnet/).</releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
       <dependency id="MQTTnet" version="$nugetVersion" />
diff --git a/Build/MQTTnet.Extensions.WebSocket4Net.nuspec b/Build/MQTTnet.Extensions.WebSocket4Net.nuspec
index 054933e..0baacdd 100644
--- a/Build/MQTTnet.Extensions.WebSocket4Net.nuspec
+++ b/Build/MQTTnet.Extensions.WebSocket4Net.nuspec
@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>This is an extension library which allows using _WebSocket4Net_ as transport for MQTTnet clients.</description>
     <releaseNotes>For release notes please go to MQTTnet release notes (https://www.nuget.org/packages/MQTTnet/).</releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
       <dependency id="MQTTnet" version="$nugetVersion" />
diff --git a/Build/MQTTnet.NETStandard.nuspec b/Build/MQTTnet.NETStandard.nuspec
index c505dd1..ef1b3fa 100644
--- a/Build/MQTTnet.NETStandard.nuspec
+++ b/Build/MQTTnet.NETStandard.nuspec
@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>This package contains the .NET Standard version of MQTTnet only.</description>
     <releaseNotes>For release notes please go to MQTTnet release notes (https://www.nuget.org/packages/MQTTnet/).</releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
       <group targetFramework="netstandard1.3">
diff --git a/Build/MQTTnet.nuspec b/Build/MQTTnet.nuspec
index c409f86..bb36085 100644
--- a/Build/MQTTnet.nuspec
+++ b/Build/MQTTnet.nuspec
@@ -23,8 +23,9 @@
 * [MQTTnet.Server] Added interceptor for unsubscriptions.
 * [MQTTnet.AspNetCore] improved compatibility with AspNetCore 3.1
 * [Core] Added MqttApplicationMessage.GetUserProperty&lt;T&gt;() convenience method (thanks to @PMExtra).
+* [Server] Removed exceptions when user properties are set with MQTT protocol version 3.1
     </releaseNotes>
-    <copyright>Copyright Christian Kratky 2016-2019</copyright>
+    <copyright>Copyright Christian Kratky 2016-2020</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
       <group targetFramework="netstandard1.3">
diff --git a/Source/MQTTnet/Formatter/V3/MqttV310DataConverter.cs b/Source/MQTTnet/Formatter/V3/MqttV310DataConverter.cs
index 48d42cd..4bf4944 100644
--- a/Source/MQTTnet/Formatter/V3/MqttV310DataConverter.cs
+++ b/Source/MQTTnet/Formatter/V3/MqttV310DataConverter.cs
@@ -20,11 +20,6 @@ namespace MQTTnet.Formatter.V3
         {
             if (applicationMessage == null) throw new ArgumentNullException(nameof(applicationMessage));
 
-            if (applicationMessage.UserProperties?.Any() == true)
-            {
-                throw new MqttProtocolViolationException("User properties are not supported in MQTT version 3.");
-            }
-
             return new MqttPublishPacket
             {
                 Topic = applicationMessage.Topic,
@@ -171,11 +166,6 @@ namespace MQTTnet.Formatter.V3
         {
             if (options == null) throw new ArgumentNullException(nameof(options));
 
-            if (options.UserProperties?.Any() == true)
-            {
-                throw new MqttProtocolViolationException("User properties are not supported in MQTT version 3.");
-            }
-
             var subscribePacket = new MqttSubscribePacket();
             subscribePacket.TopicFilters.AddRange(options.TopicFilters);
             
@@ -186,11 +176,6 @@ namespace MQTTnet.Formatter.V3
         {
             if (options == null) throw new ArgumentNullException(nameof(options));
 
-            if (options.UserProperties?.Any() == true)
-            {
-                throw new MqttProtocolViolationException("User properties are not supported in MQTT version 3.");
-            }
-
             var unsubscribePacket = new MqttUnsubscribePacket();
             unsubscribePacket.TopicFilters.AddRange(options.TopicFilters);