diff --git a/Build/MQTTnet.AspNetCore.nuspec b/Build/MQTTnet.AspNetCore.nuspec
index 5f68ced9..567affa9 100644
--- a/Build/MQTTnet.AspNetCore.nuspec
+++ b/Build/MQTTnet.AspNetCore.nuspec
@@ -15,8 +15,6 @@
     <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="netstandard2.0">
         <dependency id="MQTTnet" version="$nugetVersion" />
         <dependency id="Microsoft.AspNetCore.Connections.Abstractions" version="3.1.3" />
@@ -24,6 +22,7 @@
         <dependency id="Microsoft.AspNetCore.WebSockets" version="2.2.1" />
         <dependency id="Microsoft.Extensions.Hosting.Abstractions" version="3.1.3" />
       </group>
+      
       <group targetFramework="netcoreapp3.1">
         <dependency id="MQTTnet" version="$nugetVersion" />
         <dependency id="System.IO.Pipelines" version="4.7.1" />
@@ -40,6 +39,7 @@
 
     <!-- .NET Standard 2.0 -->
     <file src="..\Source\MQTTnet.AspNetCore\bin\Release\netstandard2.0\MQTTnet.AspNetCore.*" target="lib\netstandard2.0\"/>
+    
     <!-- .NET Core App 3.1 -->
     <file src="..\Source\MQTTnet.AspNetCore\bin\Release\netcoreapp3.1\MQTTnet.AspNetCore.*" target="lib\netcoreapp3.1\"/>
   </files>
diff --git a/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj b/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
index b59b7f40..01d7db9d 100644
--- a/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
+++ b/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard1.3;netstandard2.0;netstandard2.1</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);net452;net461</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' AND '$(MSBuildRuntimeType)' != 'Core' AND '$(SolutionName)' != 'MQTTnet.noUWP' ">$(TargetFrameworks);uap10.0</TargetFrameworks>
     <Product />
diff --git a/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj b/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
index b59b7f40..01d7db9d 100644
--- a/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
+++ b/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard1.3;netstandard2.0;netstandard2.1</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);net452;net461</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' AND '$(MSBuildRuntimeType)' != 'Core' AND '$(SolutionName)' != 'MQTTnet.noUWP' ">$(TargetFrameworks);uap10.0</TargetFrameworks>
     <Product />
diff --git a/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj b/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
index bdf26c6f..cf7f3bc3 100644
--- a/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
+++ b/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard1.3;netstandard2.0;netstandard2.1</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);net452;net461</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' AND '$(MSBuildRuntimeType)' != 'Core' AND '$(SolutionName)' != 'MQTTnet.noUWP' ">$(TargetFrameworks);uap10.0</TargetFrameworks>
     <Product />
diff --git a/Source/MQTTnet.Server/MQTTnet.Server.csproj b/Source/MQTTnet.Server/MQTTnet.Server.csproj
index 1ac001ec..0b081af8 100644
--- a/Source/MQTTnet.Server/MQTTnet.Server.csproj
+++ b/Source/MQTTnet.Server/MQTTnet.Server.csproj
@@ -47,8 +47,8 @@
     <PackageReference Include="IronPython.StdLib" Version="2.7.10-candidate1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.3" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
-    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerGen" Version="5.3.1" />
-    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="5.3.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerGen" Version="5.3.3" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="5.3.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Tests/MQTTnet.AspNetCore.Tests/MQTTnet.AspNetCore.Tests.csproj b/Tests/MQTTnet.AspNetCore.Tests/MQTTnet.AspNetCore.Tests.csproj
index 98b21cf2..8442b20a 100644
--- a/Tests/MQTTnet.AspNetCore.Tests/MQTTnet.AspNetCore.Tests.csproj
+++ b/Tests/MQTTnet.AspNetCore.Tests/MQTTnet.AspNetCore.Tests.csproj
@@ -6,7 +6,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.2.7" />
+    <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
     <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
   </ItemGroup>
diff --git a/Tests/MQTTnet.Benchmarks/MQTTnet.Benchmarks.csproj b/Tests/MQTTnet.Benchmarks/MQTTnet.Benchmarks.csproj
index 7212b475..f15a4872 100644
--- a/Tests/MQTTnet.Benchmarks/MQTTnet.Benchmarks.csproj
+++ b/Tests/MQTTnet.Benchmarks/MQTTnet.Benchmarks.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.12.0" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
     <PackageReference Include="System.IO.Pipelines" Version="4.7.1" />
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
   </ItemGroup>
diff --git a/Tests/MQTTnet.Core.Tests/MQTTnet.Tests.csproj b/Tests/MQTTnet.Core.Tests/MQTTnet.Tests.csproj
index 45ea7b38..a4b7702b 100644
--- a/Tests/MQTTnet.Core.Tests/MQTTnet.Tests.csproj
+++ b/Tests/MQTTnet.Core.Tests/MQTTnet.Tests.csproj
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
     <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Tests/MQTTnet.TestApp.AspNetCore2/MQTTnet.TestApp.AspNetCore2.csproj b/Tests/MQTTnet.TestApp.AspNetCore2/MQTTnet.TestApp.AspNetCore2.csproj
index bbe58a12..5f9368f6 100644
--- a/Tests/MQTTnet.TestApp.AspNetCore2/MQTTnet.TestApp.AspNetCore2.csproj
+++ b/Tests/MQTTnet.TestApp.AspNetCore2/MQTTnet.TestApp.AspNetCore2.csproj
@@ -9,10 +9,18 @@
     <Content Remove="wwwroot\app\app.ts" />
   </ItemGroup>
 
-  <ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp3.1'">
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.2.0" />
-    <PackageReference Include="MQTTnet.AspNetCore" Version="0.0.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Connections.Abstractions" Version="3.1.3" />
+    <PackageReference Include="Microsoft.AspNetCore.Http.Connections" Version="1.1.0" />
+    <PackageReference Include="Microsoft.AspNetCore.WebSockets" Version="2.2.1" />
+    <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="3.1.3" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <ProjectReference Include="..\..\Source\MQTTnet.AspnetCore\MQTTnet.AspNetCore.csproj" />
   </ItemGroup>
 
   <ItemGroup>