diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Compilation/ICompilationService.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Compilation/ICompilationService.cs
index 62652ae7e4..0a44a75635 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Compilation/ICompilationService.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Compilation/ICompilationService.cs
@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 
 namespace Microsoft.AspNetCore.Mvc.Razor.Compilation
 {
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/DependencyInjection/MvcRazorMvcCoreBuilderExtensions.cs b/src/Microsoft.AspNetCore.Mvc.Razor/DependencyInjection/MvcRazorMvcCoreBuilderExtensions.cs
index 47b75de1f8..38c2f86735 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/DependencyInjection/MvcRazorMvcCoreBuilderExtensions.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/DependencyInjection/MvcRazorMvcCoreBuilderExtensions.cs
@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Mvc.Razor.Compilation;
 using Microsoft.AspNetCore.Mvc.Razor.Extensions;
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
 using Microsoft.AspNetCore.Mvc.Rendering;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection.Extensions;
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/CompilerCacheContext.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/CompilerCacheContext.cs
index 1dff582dce..721ca439d7 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/CompilerCacheContext.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/CompilerCacheContext.cs
@@ -4,7 +4,7 @@
 using System;
 using System.Collections.Generic;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 
 namespace Microsoft.AspNetCore.Mvc.Razor.Internal
 {
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProject.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProject.cs
index cf6ce50b9a..7a4b48e64e 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProject.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProject.cs
@@ -4,7 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.FileProviders;
 
 namespace Microsoft.AspNetCore.Mvc.Razor.Internal
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProjectItem.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProjectItem.cs
index 97526bc2b3..5a5966dbbb 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProjectItem.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRazorProjectItem.cs
@@ -2,7 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.IO;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.FileProviders;
 
 namespace Microsoft.AspNetCore.Mvc.Razor.Internal
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRoslynCompilationService.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRoslynCompilationService.cs
index c99a2fc939..75038eca05 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRoslynCompilationService.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/DefaultRoslynCompilationService.cs
@@ -10,7 +10,7 @@ using System.Reflection;
 using System.Text;
 using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.Text;
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/RazorCompiler.cs b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/RazorCompiler.cs
index 51c30b3607..413baaa174 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/Internal/RazorCompiler.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/Internal/RazorCompiler.cs
@@ -7,7 +7,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.AspNetCore.Mvc.Razor.Extensions;
 
 namespace Microsoft.AspNetCore.Mvc.Razor.Internal
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/RazorViewEngine.cs b/src/Microsoft.AspNetCore.Mvc.Razor/RazorViewEngine.cs
index 9dd5073b16..cf72176df9 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/RazorViewEngine.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/RazorViewEngine.cs
@@ -11,7 +11,7 @@ using System.Text.Encodings.Web;
 using Microsoft.AspNetCore.Mvc.Internal;
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
 using Microsoft.AspNetCore.Mvc.ViewEngines;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.net45.json b/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.net45.json
index 84a68f88d7..b8a6a4f7ec 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.net45.json
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.net45.json
@@ -17,13 +17,13 @@
         "OldTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
         "OldMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Mvc.Razor.Compilation.RelativeFileInfo fileInfo, System.String compilationContent)",
         "NewTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
-        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Evolution.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Evolution.RazorCSharpDocument cSharpDocument)",
+        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Language.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Language.RazorCSharpDocument cSharpDocument)",
         "Kind": "Modification"
   },
   {
         "OldTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
         "NewTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
-        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Evolution.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Evolution.RazorCSharpDocument cSharpDocument)",
+        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Language.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Language.RazorCSharpDocument cSharpDocument)",
         "Kind": "Addition"
   }
 ]
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.netcore.json b/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.netcore.json
index f59dd85061..8859973916 100644
--- a/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.netcore.json
+++ b/src/Microsoft.AspNetCore.Mvc.Razor/exceptions.netcore.json
@@ -17,13 +17,13 @@
         "OldTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
         "OldMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Mvc.Razor.Compilation.RelativeFileInfo fileInfo, System.String compilationContent)",
         "NewTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
-        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Evolution.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Evolution.RazorCSharpDocument cSharpDocument)",
+        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Language.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Language.RazorCSharpDocument cSharpDocument)",
         "Kind": "Modification"
   },
     {
         "OldTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
         "NewTypeId": "public interface Microsoft.AspNetCore.Mvc.Razor.Compilation.ICompilationService",
-        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Evolution.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Evolution.RazorCSharpDocument cSharpDocument)",
+        "NewMemberId": "Microsoft.AspNetCore.Mvc.Razor.Compilation.CompilationResult Compile(Microsoft.AspNetCore.Razor.Language.RazorCodeDocument codeDocument, Microsoft.AspNetCore.Razor.Language.RazorCSharpDocument cSharpDocument)",
         "Kind": "Addition"
   }
 ]
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageActionDescriptorProvider.cs b/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageActionDescriptorProvider.cs
index f4074b21e3..646dd7697d 100644
--- a/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageActionDescriptorProvider.cs
+++ b/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageActionDescriptorProvider.cs
@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.Mvc.ApplicationModels;
 using Microsoft.AspNetCore.Mvc.Filters;
 using Microsoft.AspNetCore.Mvc.Routing;
 using Microsoft.AspNetCore.Mvc.ViewFeatures.Internal;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.Options;
 
 namespace Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure
diff --git a/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageDirectiveFeature.cs b/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageDirectiveFeature.cs
index 31045c832e..0b55841886 100644
--- a/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageDirectiveFeature.cs
+++ b/src/Microsoft.AspNetCore.Mvc.RazorPages/Infrastructure/PageDirectiveFeature.cs
@@ -3,7 +3,7 @@
 
 using System;
 using System.IO;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 
 namespace Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure
 {
diff --git a/src/Microsoft.AspNetCore.Mvc.RazorPages/Internal/PageActionInvokerProvider.cs b/src/Microsoft.AspNetCore.Mvc.RazorPages/Internal/PageActionInvokerProvider.cs
index c086f912c7..30c5d4dc97 100644
--- a/src/Microsoft.AspNetCore.Mvc.RazorPages/Internal/PageActionInvokerProvider.cs
+++ b/src/Microsoft.AspNetCore.Mvc.RazorPages/Internal/PageActionInvokerProvider.cs
@@ -16,7 +16,7 @@ using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Mvc.ViewFeatures.Internal;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Microsoft.Extensions.Primitives;
diff --git a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/CompilerCacheTest.cs b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/CompilerCacheTest.cs
index cf9f9f4296..5a4bde5698 100644
--- a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/CompilerCacheTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/CompilerCacheTest.cs
@@ -8,7 +8,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.FileProviders;
 using Moq;
 using Xunit;
diff --git a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRazorPageFactoryProviderTest.cs b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRazorPageFactoryProviderTest.cs
index d1cb26e143..7da509755b 100644
--- a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRazorPageFactoryProviderTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRazorPageFactoryProviderTest.cs
@@ -5,7 +5,7 @@ using System;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
 using Microsoft.AspNetCore.Mvc.Razor.Extensions;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.Primitives;
 using Moq;
 using Xunit;
diff --git a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRoslynCompilationServiceTest.cs b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRoslynCompilationServiceTest.cs
index b1f108a2c8..1e72b1b92c 100644
--- a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRoslynCompilationServiceTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/DefaultRoslynCompilationServiceTest.cs
@@ -7,7 +7,7 @@ using System.Reflection;
 using System.Text;
 using Microsoft.AspNetCore.Mvc.ApplicationParts;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Text;
 using Microsoft.Extensions.Logging.Abstractions;
diff --git a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/RazorCompilerTest.cs b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/RazorCompilerTest.cs
index 8a6cc21a4e..a6b7ae712e 100644
--- a/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/RazorCompilerTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Razor.Test/Internal/RazorCompilerTest.cs
@@ -5,7 +5,7 @@ using System.IO;
 using System.Text;
 using Microsoft.AspNetCore.Mvc.Razor.Compilation;
 using Microsoft.AspNetCore.Mvc.Razor.Extensions;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Moq;
 using Xunit;
 
diff --git a/test/Microsoft.AspNetCore.Mvc.Razor.Test/RazorViewEngineTest.cs b/test/Microsoft.AspNetCore.Mvc.Razor.Test/RazorViewEngineTest.cs
index ad2d180bc3..7055442134 100644
--- a/test/Microsoft.AspNetCore.Mvc.Razor.Test/RazorViewEngineTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Razor.Test/RazorViewEngineTest.cs
@@ -10,7 +10,7 @@ using Microsoft.AspNetCore.Mvc.Abstractions;
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
 using Microsoft.AspNetCore.Mvc.Routing;
 using Microsoft.AspNetCore.Mvc.ViewEngines;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.AspNetCore.Testing;
 using Microsoft.Extensions.Caching.Memory;
diff --git a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageActionDescriptorProviderTest.cs b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageActionDescriptorProviderTest.cs
index d97f10dc0a..cee7385b1f 100644
--- a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageActionDescriptorProviderTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageActionDescriptorProviderTest.cs
@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
 using Microsoft.AspNetCore.Mvc.RazorPages.Internal;
 using Microsoft.AspNetCore.Mvc.ViewFeatures.Internal;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.Options;
 using Moq;
 using Xunit;
diff --git a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageDirectiveFeatureTest.cs b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageDirectiveFeatureTest.cs
index 4761823348..ed86b5346b 100644
--- a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageDirectiveFeatureTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Infrastructure/PageDirectiveFeatureTest.cs
@@ -4,7 +4,7 @@
 using System;
 using System.IO;
 using System.Text;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Xunit;
 
 namespace Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure
diff --git a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Internal/PageActionInvokerProviderTest.cs b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Internal/PageActionInvokerProviderTest.cs
index 2f67f61d9f..b3d389b30c 100644
--- a/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Internal/PageActionInvokerProviderTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.RazorPages.Test/Internal/PageActionInvokerProviderTest.cs
@@ -16,7 +16,7 @@ using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Mvc.ViewFeatures.Internal;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Primitives;
diff --git a/test/WebSites/RazorPageExecutionInstrumentationWebSite/Startup.cs b/test/WebSites/RazorPageExecutionInstrumentationWebSite/Startup.cs
index 7d9689769a..79f3568ab7 100644
--- a/test/WebSites/RazorPageExecutionInstrumentationWebSite/Startup.cs
+++ b/test/WebSites/RazorPageExecutionInstrumentationWebSite/Startup.cs
@@ -5,7 +5,7 @@ using System.Diagnostics;
 using System.IO;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace RazorPageExecutionInstrumentationWebSite
diff --git a/test/WebSites/RazorPageExecutionInstrumentationWebSite/TestRazorCompilationService.cs b/test/WebSites/RazorPageExecutionInstrumentationWebSite/TestRazorCompilationService.cs
index 98c4842fe9..58b21c2ba9 100644
--- a/test/WebSites/RazorPageExecutionInstrumentationWebSite/TestRazorCompilationService.cs
+++ b/test/WebSites/RazorPageExecutionInstrumentationWebSite/TestRazorCompilationService.cs
@@ -4,7 +4,7 @@
 using System.IO;
 using System.Text;
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
-using Microsoft.AspNetCore.Razor.Evolution;
+using Microsoft.AspNetCore.Razor.Language;
 
 namespace RazorPageExecutionInstrumentationWebSite
 {