diff --git a/demo/Directory.Build.props b/demo/Directory.Build.props
index 48fa85e..9c43e2b 100644
--- a/demo/Directory.Build.props
+++ b/demo/Directory.Build.props
@@ -2,5 +2,6 @@
   <PropertyGroup>
     <Nullable>enable</Nullable>
     <AvaloniaVersion>11.2.0</AvaloniaVersion>
+    <CommunityToolkitVersion>8.3.2</CommunityToolkitVersion>
   </PropertyGroup>
 </Project>
diff --git a/demo/Semi.Avalonia.Demo.Desktop/Program.cs b/demo/Semi.Avalonia.Demo.Desktop/Program.cs
index e011c45..f6fb44d 100644
--- a/demo/Semi.Avalonia.Demo.Desktop/Program.cs
+++ b/demo/Semi.Avalonia.Demo.Desktop/Program.cs
@@ -16,13 +16,13 @@ class Program
     public static void Main(string[] args) => BuildAvaloniaApp()
         .With(new FontManagerOptions
         {
-            FontFallbacks = new[]
-            {
+            FontFallbacks =
+            [
                 new FontFallback
                 {
                     FontFamily = new FontFamily("Microsoft YaHei")
                 }
-            }
+            ]
         })
         .StartWithClassicDesktopLifetime(args);
 
diff --git a/demo/Semi.Avalonia.Demo/Semi.Avalonia.Demo.csproj b/demo/Semi.Avalonia.Demo/Semi.Avalonia.Demo.csproj
index cb9a679..9e5c54a 100644
--- a/demo/Semi.Avalonia.Demo/Semi.Avalonia.Demo.csproj
+++ b/demo/Semi.Avalonia.Demo/Semi.Avalonia.Demo.csproj
@@ -14,7 +14,7 @@
         <PackageReference Include="Avalonia.Controls.DataGrid" Version="$(AvaloniaVersion)" />
         <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)" />
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="$(CommunityToolkitVersion)" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/demo/Semi.Avalonia.TreeDataGrid.Demo/Program.cs b/demo/Semi.Avalonia.TreeDataGrid.Demo/Program.cs
index b71cf5e..b0b60d9 100644
--- a/demo/Semi.Avalonia.TreeDataGrid.Demo/Program.cs
+++ b/demo/Semi.Avalonia.TreeDataGrid.Demo/Program.cs
@@ -1,5 +1,6 @@
 using Avalonia;
 using System;
+using Avalonia.Media;
 
 namespace Semi.Avalonia.TreeDataGrid.Demo;
 
@@ -10,12 +11,21 @@ class Program
     // yet and stuff might break.
     [STAThread]
     public static void Main(string[] args) => BuildAvaloniaApp()
+        .With(new FontManagerOptions
+        {
+            FontFallbacks =
+            [
+                new FontFallback
+                {
+                    FontFamily = new FontFamily("Microsoft YaHei")
+                }
+            ]
+        })
         .StartWithClassicDesktopLifetime(args);
 
     // Avalonia configuration, don't remove; also used by visual designer.
     public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>()
             .UsePlatformDetect()
-            .WithInterFont()
             .LogToTrace();
 }
\ No newline at end of file
diff --git a/demo/Semi.Avalonia.TreeDataGrid.Demo/Semi.Avalonia.TreeDataGrid.Demo.csproj b/demo/Semi.Avalonia.TreeDataGrid.Demo/Semi.Avalonia.TreeDataGrid.Demo.csproj
index 59312af..39c2617 100644
--- a/demo/Semi.Avalonia.TreeDataGrid.Demo/Semi.Avalonia.TreeDataGrid.Demo.csproj
+++ b/demo/Semi.Avalonia.TreeDataGrid.Demo/Semi.Avalonia.TreeDataGrid.Demo.csproj
@@ -4,25 +4,24 @@
         <TargetFramework>net6.0</TargetFramework>
         <Nullable>enable</Nullable>
         <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+        <LangVersion>latest</LangVersion>
         <ApplicationManifest>app.manifest</ApplicationManifest>
         <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
     </PropertyGroup>
 
     <Import Project="../Directory.Build.props" />
-    
+
     <ItemGroup>
         <PackageReference Include="Avalonia" Version="$(AvaloniaVersion)" />
         <PackageReference Include="Avalonia.Desktop" Version="$(AvaloniaVersion)" />
-        <PackageReference Include="Avalonia.Themes.Fluent" Version="$(AvaloniaVersion)" />
-        <PackageReference Include="Avalonia.Fonts.Inter" Version="$(AvaloniaVersion)" />
         <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)" />
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="$(CommunityToolkitVersion)" />
     </ItemGroup>
 
 
     <ItemGroup>
-      <ProjectReference Include="..\..\src\Semi.Avalonia.TreeDataGrid\Semi.Avalonia.TreeDataGrid.csproj" />
-      <ProjectReference Include="..\..\src\Semi.Avalonia\Semi.Avalonia.csproj" />
+        <ProjectReference Include="..\..\src\Semi.Avalonia.TreeDataGrid\Semi.Avalonia.TreeDataGrid.csproj" />
+        <ProjectReference Include="..\..\src\Semi.Avalonia\Semi.Avalonia.csproj" />
     </ItemGroup>
 </Project>