diff --git a/Build/MQTTnet.nuspec b/Build/MQTTnet.nuspec
index eaf178c..81e6caf 100644
--- a/Build/MQTTnet.nuspec
+++ b/Build/MQTTnet.nuspec
@@ -11,6 +11,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker) and supports v3.1.0, v3.1.1 and v5.0.0 of the MQTT protocol.</description>
     <releaseNotes>
+* [ManagedClient] Added builder class for MqttClientUnsubscribeOptions (thanks to @dominikviererbe).
 * [ManagedClient] Added support for persisted sessions (thansk to @PMExtra).
 * [Client] Improve connection stability (thanks to @jltjohanlindqvist).
 * [ManagedClient] Fixed a memory leak (thanks to @zawodskoj).
diff --git a/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj b/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
index 86db749..c0768b4 100644
--- a/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
+++ b/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netcoreapp2.1;netcoreapp3.1</TargetFrameworks>
     <Product />
     <Company />
     <Authors />
@@ -14,7 +14,11 @@
     <DefineConstants>RELEASE;NETSTANDARD2_0</DefineConstants>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+    
+  <ItemGroup Condition=" '$(TargetFramework)' != 'netcoreapp3.1' ">
     <PackageReference Include="Microsoft.AspNetCore.Connections.Abstractions" Version="2.1.3" />
     <PackageReference Include="Microsoft.AspNetCore.Http.Connections" Version="1.0.3" />
     <PackageReference Include="Microsoft.AspNetCore.WebSockets" Version="2.1.1" />
diff --git a/Source/MQTTnet/Client/Unsubscribing/MqttClientUnsubscribeOptionsBuilder.cs b/Source/MQTTnet/Client/Unsubscribing/MqttClientUnsubscribeOptionsBuilder.cs
new file mode 100644
index 0000000..96c178f
--- /dev/null
+++ b/Source/MQTTnet/Client/Unsubscribing/MqttClientUnsubscribeOptionsBuilder.cs
@@ -0,0 +1,60 @@
+using MQTTnet.Packets;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace MQTTnet.Client.Unsubscribing
+{
+    public class MqttClientUnsubscribeOptionsBuilder
+    {
+        private readonly MqttClientUnsubscribeOptions _unsubscribeOptions = new MqttClientUnsubscribeOptions();
+
+        public MqttClientUnsubscribeOptionsBuilder WithUserProperty(string name, string value)
+        {
+            if (name is null) throw new ArgumentNullException(nameof(name));
+            if (value is null) throw new ArgumentNullException(nameof(value));
+
+            return WithUserProperty(new MqttUserProperty(name, value));
+        }
+
+        public MqttClientUnsubscribeOptionsBuilder WithUserProperty(MqttUserProperty userProperty)
+        {
+            if (userProperty is null) throw new ArgumentNullException(nameof(userProperty));
+
+            if (_unsubscribeOptions.UserProperties is null)
+            {
+                _unsubscribeOptions.UserProperties = new List<MqttUserProperty>();
+            }
+
+            _unsubscribeOptions.UserProperties.Add(userProperty);
+
+            return this;
+        }
+
+        public MqttClientUnsubscribeOptionsBuilder WithTopicFilter(string topic)
+        {
+            if (topic is null) throw new ArgumentNullException(nameof(topic));
+
+            if (_unsubscribeOptions.TopicFilters is null)
+            {
+                _unsubscribeOptions.TopicFilters = new List<string>();
+            }
+
+            _unsubscribeOptions.TopicFilters.Add(topic);
+
+            return this;
+        }
+        
+        public MqttClientUnsubscribeOptionsBuilder WithTopicFilter(TopicFilter topicFilter)
+        {
+            if (topicFilter is null) throw new ArgumentNullException(nameof(topicFilter));
+
+            return WithTopic(topicFilter.Topic);
+        }
+
+        public MqttClientUnsubscribeOptions Build()
+        {
+            return _unsubscribeOptions;
+        }
+    }
+}