diff --git a/Directory.Packages.props b/Directory.Packages.props
index a155c83..398e7da 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -16,9 +16,9 @@
     <PackageVersion Include="Microsoft.Win32.SystemEvents" Version="8.0.0" />
 
     <!-- Avalonia (Plan A: WPF -> Avalonia cutover). Track the latest 11.x stable. -->
-    <PackageVersion Include="Avalonia" Version="11.3.16" />
+    <PackageVersion Include="Avalonia" Version="12.0.3" />
     <PackageVersion Include="Avalonia.Desktop" Version="11.3.16" />
-    <PackageVersion Include="Avalonia.Themes.Fluent" Version="11.3.16" />
+    <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.0.3" />
     <PackageVersion Include="Avalonia.Fonts.Inter" Version="11.3.16" />
     <PackageVersion Include="Avalonia.Markup.Xaml.Loader" Version="11.3.16" />
     <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.16" />