diff --git a/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory.cs b/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory.cs
index 47c65ecb880..936affbe1e4 100644
--- a/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory.cs
+++ b/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory.cs
@@ -29,10 +29,13 @@ public RazorProjectEngine Create(
         var extension = new AssemblyExtension(configuration.ConfigurationName, Assembly.Load(assemblyName));
         var initializer = extension.CreateInitializer();
 
-        return RazorProjectEngine.Create(configuration, fileSystem, b =>
+        return RazorProjectEngine.Create(configuration, fileSystem, builder =>
         {
-            initializer.Initialize(b);
-            configure?.Invoke(b);
+            PreInitialize(builder);
+            initializer.Initialize(builder);
+            configure?.Invoke(builder);
         });
     }
+
+    protected virtual void PreInitialize(RazorProjectEngineBuilder builder) { }
 }
diff --git a/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory_3_0.cs b/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory_3_0.cs
index c729ced663d..fe87d2e0093 100644
--- a/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory_3_0.cs
+++ b/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/ProjectEngineFactory_3_0.cs
@@ -1,9 +1,14 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the MIT license. See License.txt in the project root for license information.
 
+using Microsoft.AspNetCore.Razor.Language;
+using Microsoft.CodeAnalysis.Razor;
+
 namespace Microsoft.AspNetCore.Razor.LanguageServer.Common;
 
 internal class ProjectEngineFactory_3_0 : ProjectEngineFactory
 {
     protected override string AssemblyName { get; } = "Microsoft.AspNetCore.Mvc.Razor.Extensions";
+
+    protected override void PreInitialize(RazorProjectEngineBuilder builder) => CompilerFeatures.Register(builder);
 }