diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index e4bf1bfee9..eb1b303d38 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -2402,11 +2402,18 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
         {
             case NSEventTypeLeftMouseDown:
             {
-                auto avnPoint = [AvnView toAvnPoint:[event locationInWindow]];
-                auto point = [self translateLocalPoint:avnPoint];
-                AvnVector delta;
+                AvnView* view = _parent->View;
+                NSPoint windowPoint = [event locationInWindow];
+                NSPoint viewPoint = [view convertPoint:windowPoint fromView:nil];
                 
-                _parent->BaseEvents->RawMouseEvent(NonClientLeftButtonDown, [event timestamp] * 1000, AvnInputModifiersNone, point, delta);
+                if (!NSPointInRect(viewPoint, view.bounds))
+                {
+                    auto avnPoint = [AvnView toAvnPoint:windowPoint];
+                    auto point = [self translateLocalPoint:avnPoint];
+                    AvnVector delta;
+                   
+                    _parent->BaseEvents->RawMouseEvent(NonClientLeftButtonDown, [event timestamp] * 1000, AvnInputModifiersNone, point, delta);
+                }
             }
             break;
                 
diff --git a/nukebuild/_build.csproj b/nukebuild/_build.csproj
index e08ffd0413..b28d3eb700 100644
--- a/nukebuild/_build.csproj
+++ b/nukebuild/_build.csproj
@@ -15,6 +15,7 @@
     <PackageReference Include="JetBrains.dotMemoryUnit" Version="3.0.20171219.105559" />
     <PackageReference Include="vswhere" Version="2.6.7" Condition=" '$(OS)' == 'Windows_NT' " />
     <PackageReference Include="ILRepack.NETStandard" Version="2.0.4" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.7.0" />
     <!-- Keep in sync with Avalonia.Build.Tasks -->
     <PackageReference Include="Mono.Cecil" Version="0.11.2" />
   </ItemGroup>
@@ -36,10 +37,10 @@
     <None Include="..\GitVersion.yml" Condition="Exists('..\GitVersion.yml')" />
     <Compile Remove="Numerge/**/*.*" />
     <Compile Include="Numerge/Numerge/**/*.cs" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\src\tools\MicroComGenerator\MicroComGenerator.csproj" />
+    <Compile Include="..\src\tools\MicroComGenerator\**\*.cs" Exclude="..\src\tools\MicroComGenerator\obj\**">
+      <Link>MicroComGenerator\%(Filename)%(Extension)</Link>
+    </Compile>
+    <Compile Remove="..\src\tools\MicroComGenerator\Program.cs" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/BindingDemo/BindingDemo.csproj b/samples/BindingDemo/BindingDemo.csproj
index d898b737a9..2c6ff74e5e 100644
--- a/samples/BindingDemo/BindingDemo.csproj
+++ b/samples/BindingDemo/BindingDemo.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
diff --git a/samples/ControlCatalog.NetCore/ControlCatalog.NetCore.csproj b/samples/ControlCatalog.NetCore/ControlCatalog.NetCore.csproj
index 3c2d2ee359..2d4fc45171 100644
--- a/samples/ControlCatalog.NetCore/ControlCatalog.NetCore.csproj
+++ b/samples/ControlCatalog.NetCore/ControlCatalog.NetCore.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
   </PropertyGroup>
 
diff --git a/samples/PlatformSanityChecks/PlatformSanityChecks.csproj b/samples/PlatformSanityChecks/PlatformSanityChecks.csproj
index 86d762a5bc..9660d2a90d 100644
--- a/samples/PlatformSanityChecks/PlatformSanityChecks.csproj
+++ b/samples/PlatformSanityChecks/PlatformSanityChecks.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/samples/Previewer/Previewer.csproj b/samples/Previewer/Previewer.csproj
index cfedb7ad9e..c1d14cba26 100644
--- a/samples/Previewer/Previewer.csproj
+++ b/samples/Previewer/Previewer.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Update="**\*.xaml.cs">
diff --git a/samples/RemoteDemo/RemoteDemo.csproj b/samples/RemoteDemo/RemoteDemo.csproj
index 530cad805f..607222c2e2 100644
--- a/samples/RemoteDemo/RemoteDemo.csproj
+++ b/samples/RemoteDemo/RemoteDemo.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\ControlCatalog\ControlCatalog.csproj" />
diff --git a/samples/RenderDemo/RenderDemo.csproj b/samples/RenderDemo/RenderDemo.csproj
index 0d33b4c111..eed6fa9e89 100644
--- a/samples/RenderDemo/RenderDemo.csproj
+++ b/samples/RenderDemo/RenderDemo.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="..\..\src\Avalonia.Visuals\Rendering\SceneGraph\LineBoundsHelper.cs" Link="LineBoundsHelper.cs" />
diff --git a/samples/Sandbox/Sandbox.csproj b/samples/Sandbox/Sandbox.csproj
index 0c19440a1e..8f2812e048 100644
--- a/samples/Sandbox/Sandbox.csproj
+++ b/samples/Sandbox/Sandbox.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
   </PropertyGroup>
 
diff --git a/samples/VirtualizationDemo/VirtualizationDemo.csproj b/samples/VirtualizationDemo/VirtualizationDemo.csproj
index d898b737a9..2c6ff74e5e 100644
--- a/samples/VirtualizationDemo/VirtualizationDemo.csproj
+++ b/samples/VirtualizationDemo/VirtualizationDemo.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
diff --git a/src/Avalonia.Controls/MenuItem.cs b/src/Avalonia.Controls/MenuItem.cs
index 7b06d3c868..0bead04982 100644
--- a/src/Avalonia.Controls/MenuItem.cs
+++ b/src/Avalonia.Controls/MenuItem.cs
@@ -387,7 +387,7 @@ namespace Avalonia.Controls
                 parent = parent.Parent;
             }
 
-            _isEmbeddedInMenu = parent is IMenu;
+            _isEmbeddedInMenu = parent.FindLogicalAncestorOfType<IMenu>(true) != null;
         }
 
         protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
diff --git a/src/Avalonia.Controls/Platform/PlatformManager.cs b/src/Avalonia.Controls/Platform/PlatformManager.cs
index e39f0b1e99..acd45ad29a 100644
--- a/src/Avalonia.Controls/Platform/PlatformManager.cs
+++ b/src/Avalonia.Controls/Platform/PlatformManager.cs
@@ -29,7 +29,7 @@ namespace Avalonia.Controls.Platform
 
             if (platform == null)
             {
-                throw new Exception("Could not CreateWindow(): IWindowingPlatform is not registered.");
+                throw new Exception("Could not CreateTrayIcon(): IWindowingPlatform is not registered.");
             }
 
             return s_designerMode ? null : platform.CreateTrayIcon();
@@ -45,7 +45,7 @@ namespace Avalonia.Controls.Platform
                 throw new Exception("Could not CreateWindow(): IWindowingPlatform is not registered.");
             }
 
-            return s_designerMode ? (IWindowImpl)platform.CreateEmbeddableWindow() : platform.CreateWindow();
+            return s_designerMode ? platform.CreateEmbeddableWindow() : platform.CreateWindow();
         }
 
         public static IWindowImpl CreateEmbeddableWindow()
diff --git a/src/Avalonia.Input/InputElement.cs b/src/Avalonia.Input/InputElement.cs
index b5ab7b4da1..26ebf86857 100644
--- a/src/Avalonia.Input/InputElement.cs
+++ b/src/Avalonia.Input/InputElement.cs
@@ -632,7 +632,7 @@ namespace Avalonia.Input
             }
             else if (change.Property == IsKeyboardFocusWithinProperty)
             {
-                PseudoClasses.Set(":focus-within", _isKeyboardFocusWithin);
+                PseudoClasses.Set(":focus-within", change.NewValue.GetValueOrDefault<bool>());
             }
         }
 
diff --git a/src/tools/MicroComGenerator/MicroComGenerator.csproj b/src/tools/MicroComGenerator/MicroComGenerator.csproj
index eab14760a4..68895b96ca 100644
--- a/src/tools/MicroComGenerator/MicroComGenerator.csproj
+++ b/src/tools/MicroComGenerator/MicroComGenerator.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
-    <PropertyGroup>
-        <OutputType>Exe</OutputType>
-        <TargetFrameworks>net6.0;netcoreapp3.1</TargetFrameworks>
-    </PropertyGroup>
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.8.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.7.0" />
diff --git a/tests/Avalonia.Animation.UnitTests/Avalonia.Animation.UnitTests.csproj b/tests/Avalonia.Animation.UnitTests/Avalonia.Animation.UnitTests.csproj
index 5b686dea4c..e07ece5460 100644
--- a/tests/Avalonia.Animation.UnitTests/Avalonia.Animation.UnitTests.csproj
+++ b/tests/Avalonia.Animation.UnitTests/Avalonia.Animation.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
diff --git a/tests/Avalonia.Base.UnitTests/Avalonia.Base.UnitTests.csproj b/tests/Avalonia.Base.UnitTests/Avalonia.Base.UnitTests.csproj
index c4c1f49346..9628d16a6c 100644
--- a/tests/Avalonia.Base.UnitTests/Avalonia.Base.UnitTests.csproj
+++ b/tests/Avalonia.Base.UnitTests/Avalonia.Base.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
     <LangVersion>latest</LangVersion>
diff --git a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
index e8e69efdbc..3994d20c68 100644
--- a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
+++ b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
diff --git a/tests/Avalonia.Controls.DataGrid.UnitTests/Avalonia.Controls.DataGrid.UnitTests.csproj b/tests/Avalonia.Controls.DataGrid.UnitTests/Avalonia.Controls.DataGrid.UnitTests.csproj
index c0c9303767..eb1bf24d0c 100644
--- a/tests/Avalonia.Controls.DataGrid.UnitTests/Avalonia.Controls.DataGrid.UnitTests.csproj
+++ b/tests/Avalonia.Controls.DataGrid.UnitTests/Avalonia.Controls.DataGrid.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj b/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
index 6b17427eda..8dd8e843ac 100644
--- a/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
+++ b/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj b/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
index 523c5e7ff4..5358b71571 100644
--- a/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
+++ b/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
diff --git a/tests/Avalonia.DesignerSupport.Tests/Avalonia.DesignerSupport.Tests.csproj b/tests/Avalonia.DesignerSupport.Tests/Avalonia.DesignerSupport.Tests.csproj
index dad500e3c6..3af8d6e0d7 100644
--- a/tests/Avalonia.DesignerSupport.Tests/Avalonia.DesignerSupport.Tests.csproj
+++ b/tests/Avalonia.DesignerSupport.Tests/Avalonia.DesignerSupport.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
   </PropertyGroup>
   <Import Project="..\..\build\UnitTests.NetCore.targets" />
@@ -18,4 +18,4 @@
   <ItemGroup>
     <Folder Include="Properties\" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/tests/Avalonia.DesignerSupport.Tests/DesignerSupportTests.cs b/tests/Avalonia.DesignerSupport.Tests/DesignerSupportTests.cs
index d76ed9042f..6e32158fcb 100644
--- a/tests/Avalonia.DesignerSupport.Tests/DesignerSupportTests.cs
+++ b/tests/Avalonia.DesignerSupport.Tests/DesignerSupportTests.cs
@@ -29,25 +29,25 @@ namespace Avalonia.DesignerSupport.Tests
 
         [SkippableTheory,
          InlineData(
-            @"..\..\..\..\..\tests/Avalonia.DesignerSupport.TestApp/bin/$BUILD/netcoreapp3.1/",
+            @"..\..\..\..\..\tests/Avalonia.DesignerSupport.TestApp/bin/$BUILD/net6.0/",
             "Avalonia.DesignerSupport.TestApp",
             "Avalonia.DesignerSupport.TestApp.dll",
             @"..\..\..\..\..\tests\Avalonia.DesignerSupport.TestApp\MainWindow.xaml",
             "win32"),
          InlineData(
-            @"..\..\..\..\..\samples\ControlCatalog.NetCore\bin\$BUILD\netcoreapp3.1\",
+            @"..\..\..\..\..\samples\ControlCatalog.NetCore\bin\$BUILD\net6.0\",
             "ControlCatalog.NetCore",
             "ControlCatalog.dll",
             @"..\..\..\..\..\samples\ControlCatalog\MainWindow.xaml",
             "win32"),
         InlineData(
-            @"..\..\..\..\..\tests/Avalonia.DesignerSupport.TestApp/bin/$BUILD/netcoreapp3.1/",
+            @"..\..\..\..\..\tests/Avalonia.DesignerSupport.TestApp/bin/$BUILD/net6.0/",
             "Avalonia.DesignerSupport.TestApp",
             "Avalonia.DesignerSupport.TestApp.dll",
             @"..\..\..\..\..\tests\Avalonia.DesignerSupport.TestApp\MainWindow.xaml",
             "avalonia-remote"),
         InlineData(
-            @"..\..\..\..\..\samples\ControlCatalog.NetCore\bin\$BUILD\netcoreapp3.1\",
+            @"..\..\..\..\..\samples\ControlCatalog.NetCore\bin\$BUILD\net6.0\",
             "ControlCatalog.NetCore",
             "ControlCatalog.dll",
             @"..\..\..\..\..\samples\ControlCatalog\MainWindow.xaml",
diff --git a/tests/Avalonia.Direct2D1.RenderTests/Avalonia.Direct2D1.RenderTests.csproj b/tests/Avalonia.Direct2D1.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
index c59e59be63..4353b7b09c 100644
--- a/tests/Avalonia.Direct2D1.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
+++ b/tests/Avalonia.Direct2D1.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="..\Avalonia.RenderTests\**\*.cs" />
diff --git a/tests/Avalonia.Direct2D1.UnitTests/Avalonia.Direct2D1.UnitTests.csproj b/tests/Avalonia.Direct2D1.UnitTests/Avalonia.Direct2D1.UnitTests.csproj
index 42229ba456..636643d9e4 100644
--- a/tests/Avalonia.Direct2D1.UnitTests/Avalonia.Direct2D1.UnitTests.csproj
+++ b/tests/Avalonia.Direct2D1.UnitTests/Avalonia.Direct2D1.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <Import Project="..\..\build\UnitTests.NetCore.targets" />
   <Import Project="..\..\build\Moq.props" />
diff --git a/tests/Avalonia.Input.UnitTests/Avalonia.Input.UnitTests.csproj b/tests/Avalonia.Input.UnitTests/Avalonia.Input.UnitTests.csproj
index dd50eff2b6..3b0b082093 100644
--- a/tests/Avalonia.Input.UnitTests/Avalonia.Input.UnitTests.csproj
+++ b/tests/Avalonia.Input.UnitTests/Avalonia.Input.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
diff --git a/tests/Avalonia.Interactivity.UnitTests/Avalonia.Interactivity.UnitTests.csproj b/tests/Avalonia.Interactivity.UnitTests/Avalonia.Interactivity.UnitTests.csproj
index a9f5318e8f..f6cfe51db4 100644
--- a/tests/Avalonia.Interactivity.UnitTests/Avalonia.Interactivity.UnitTests.csproj
+++ b/tests/Avalonia.Interactivity.UnitTests/Avalonia.Interactivity.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
     <LangVersion>latest</LangVersion>
diff --git a/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj b/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
index 74cc6e292b..a3c85c72b5 100644
--- a/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
+++ b/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
   </PropertyGroup>
   <Import Project="..\..\build\UnitTests.NetCore.targets" />
diff --git a/tests/Avalonia.Markup.UnitTests/Avalonia.Markup.UnitTests.csproj b/tests/Avalonia.Markup.UnitTests/Avalonia.Markup.UnitTests.csproj
index 7d1285c025..fceea56273 100644
--- a/tests/Avalonia.Markup.UnitTests/Avalonia.Markup.UnitTests.csproj
+++ b/tests/Avalonia.Markup.UnitTests/Avalonia.Markup.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
diff --git a/tests/Avalonia.Markup.Xaml.UnitTests/Avalonia.Markup.Xaml.UnitTests.csproj b/tests/Avalonia.Markup.Xaml.UnitTests/Avalonia.Markup.Xaml.UnitTests.csproj
index 7748115137..14f6525dbe 100644
--- a/tests/Avalonia.Markup.Xaml.UnitTests/Avalonia.Markup.Xaml.UnitTests.csproj
+++ b/tests/Avalonia.Markup.Xaml.UnitTests/Avalonia.Markup.Xaml.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFrameworks>net6.0;net47</TargetFrameworks>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
     <LangVersion>latest</LangVersion>
@@ -25,7 +25,6 @@
     <ProjectReference Include="..\..\src\Avalonia.Visuals\Avalonia.Visuals.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Styling\Avalonia.Styling.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Themes.Default\Avalonia.Themes.Default.csproj" />
-    <ProjectReference Include="..\Avalonia.Base.UnitTests\Avalonia.Base.UnitTests.csproj" />
     <ProjectReference Include="..\Avalonia.UnitTests\Avalonia.UnitTests.csproj" />
   </ItemGroup>
   <ItemGroup>
diff --git a/tests/Avalonia.ReactiveUI.UnitTests/Avalonia.ReactiveUI.UnitTests.csproj b/tests/Avalonia.ReactiveUI.UnitTests/Avalonia.ReactiveUI.UnitTests.csproj
index 95e10d7a2f..9f3ec4013c 100644
--- a/tests/Avalonia.ReactiveUI.UnitTests/Avalonia.ReactiveUI.UnitTests.csproj
+++ b/tests/Avalonia.ReactiveUI.UnitTests/Avalonia.ReactiveUI.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <SignAssembly>false</SignAssembly>
   </PropertyGroup>
   <Import Project="..\..\build\UnitTests.NetCore.targets" />
diff --git a/tests/Avalonia.Skia.RenderTests/Avalonia.Skia.RenderTests.csproj b/tests/Avalonia.Skia.RenderTests/Avalonia.Skia.RenderTests.csproj
index 14d0f4debf..41c76dcd83 100644
--- a/tests/Avalonia.Skia.RenderTests/Avalonia.Skia.RenderTests.csproj
+++ b/tests/Avalonia.Skia.RenderTests/Avalonia.Skia.RenderTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <DefineConstants>AVALONIA_SKIA;AVALONIA_SKIA_SKIP_FAIL</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
diff --git a/tests/Avalonia.Skia.UnitTests/Avalonia.Skia.UnitTests.csproj b/tests/Avalonia.Skia.UnitTests/Avalonia.Skia.UnitTests.csproj
index ef69865e32..e37cd25009 100644
--- a/tests/Avalonia.Skia.UnitTests/Avalonia.Skia.UnitTests.csproj
+++ b/tests/Avalonia.Skia.UnitTests/Avalonia.Skia.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <Import Project="..\..\build\UnitTests.NetCore.targets" />
diff --git a/tests/Avalonia.Styling.UnitTests/Avalonia.Styling.UnitTests.csproj b/tests/Avalonia.Styling.UnitTests/Avalonia.Styling.UnitTests.csproj
index 7864687800..c5eb636a9a 100644
--- a/tests/Avalonia.Styling.UnitTests/Avalonia.Styling.UnitTests.csproj
+++ b/tests/Avalonia.Styling.UnitTests/Avalonia.Styling.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <NoWarn>CS0067</NoWarn>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/Avalonia.Visuals.UnitTests/Avalonia.Visuals.UnitTests.csproj b/tests/Avalonia.Visuals.UnitTests/Avalonia.Visuals.UnitTests.csproj
index 13a04be5db..57de90114e 100644
--- a/tests/Avalonia.Visuals.UnitTests/Avalonia.Visuals.UnitTests.csproj
+++ b/tests/Avalonia.Visuals.UnitTests/Avalonia.Visuals.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>