diff --git a/src/Web/Avalonia.Blazor/Avalonia.Blazor.csproj b/src/Web/Avalonia.Blazor/Avalonia.Blazor.csproj
index 2298e27829..188b05ff15 100644
--- a/src/Web/Avalonia.Blazor/Avalonia.Blazor.csproj
+++ b/src/Web/Avalonia.Blazor/Avalonia.Blazor.csproj
@@ -5,6 +5,7 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <PackageId>Avalonia.Web.Blazor</PackageId>
+    <LangVersion>preview</LangVersion>
   </PropertyGroup>