diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index c67685f..cd8ce25 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
    <PropertyGroup>
-	   <AvaloniaVersion>11.3.12</AvaloniaVersion>
+	   <AvaloniaVersion>12.0.0-preview1</AvaloniaVersion>
    </PropertyGroup>
 </Project>
diff --git a/src/MayShow.csproj b/src/MayShow.csproj
index d3a510b..67f4ac4 100644
--- a/src/MayShow.csproj
+++ b/src/MayShow.csproj
@@ -42,10 +42,6 @@
     <PackageReference Include="Avalonia.Themes.Fluent" Version="$(AvaloniaVersion)" />
     <PackageReference Include="Avalonia.Fonts.Inter" Version="$(AvaloniaVersion)" />
     <PackageReference Include="Avalonia.Controls.DataGrid" Version="$(AvaloniaVersion)" />
-    <PackageReference Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)">
-      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
-      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
-    </PackageReference>
     <PackageReference Include="PDFsharp-MigraDoc" Version="6.2.3" />
     <PackageReference Include="Magick.NET-Q16-AnyCPU" Version="14.10.2" />
     <PackageReference Include="Deadpikle.AvaloniaProgressRing" Version="0.10.11-preview20251127001" />