diff --git a/.github/workflows/pack.yml b/.github/workflows/pack.yml
index 619b807..5988927 100644
--- a/.github/workflows/pack.yml
+++ b/.github/workflows/pack.yml
@@ -13,9 +13,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4.1.1
 
-      - name: Nuget
+      - name: Nuget Ursa
         run: dotnet pack ./src/Ursa -o ./nugets
 
+      - name: Nuget Ursa.Themes.Semi
+        run: dotnet pack ./src/Ursa.Themes.Semi -o ./nugets
+
       - name: Desktop
         run: dotnet publish ./demo/Ursa.Demo.Desktop -r win-x64 -c Release /p:PublishSingleFile=true /p:IncludeNativeLibrariesForSelfExtract=true --self-contained true
 
diff --git a/demo/Ursa.Demo.Browser/Program.cs b/demo/Ursa.Demo.Browser/Program.cs
index 4fa7162..f665641 100644
--- a/demo/Ursa.Demo.Browser/Program.cs
+++ b/demo/Ursa.Demo.Browser/Program.cs
@@ -7,9 +7,9 @@ using Avalonia.Browser;
 
 namespace Ursa.Demo.Browser;
 
-internal partial class Program
+internal sealed partial class Program
 {
-    private static async Task Main(string[] args) => await BuildAvaloniaApp()
+    private static Task Main(string[] args) => BuildAvaloniaApp()
         .StartBrowserAppAsync("out");
 
     public static AppBuilder BuildAvaloniaApp()
diff --git a/demo/Ursa.Demo.Browser/Ursa.Demo.Browser.csproj b/demo/Ursa.Demo.Browser/Ursa.Demo.Browser.csproj
index 5860415..0b2c8c4 100644
--- a/demo/Ursa.Demo.Browser/Ursa.Demo.Browser.csproj
+++ b/demo/Ursa.Demo.Browser/Ursa.Demo.Browser.csproj
@@ -11,4 +11,8 @@
     <ItemGroup>
         <ProjectReference Include="..\Ursa.Demo\Ursa.Demo.csproj"/>
     </ItemGroup>
+
+    <ItemGroup>
+        <TrimmerRootDescriptor Include="linker.xml"/>
+    </ItemGroup>
 </Project>
diff --git a/demo/Ursa.Demo.Browser/linker.xml b/demo/Ursa.Demo.Browser/linker.xml
new file mode 100644
index 0000000..1b96c2a
--- /dev/null
+++ b/demo/Ursa.Demo.Browser/linker.xml
@@ -0,0 +1,5 @@
+<linker>
+    <assembly fullname="Semi.Avalonia, Version=11.1.0.0, Culture=neutral, PublicKeyToken=null"/>
+    <assembly fullname="Ursa, Version=0.3.0.0, Culture=neutral, PublicKeyToken=null"/>
+    <assembly fullname="Ursa.Themes.Semi, Version=0.3.0.0, Culture=neutral, PublicKeyToken=null"/>
+</linker>
\ No newline at end of file