diff --git a/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/ProjectSystem/ProjectSnapshotManagerBenchmarkBase.cs b/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/ProjectSystem/ProjectSnapshotManagerBenchmarkBase.cs
index 53159c5d88..ff1fcee00d 100644
--- a/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/ProjectSystem/ProjectSnapshotManagerBenchmarkBase.cs
+++ b/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/ProjectSystem/ProjectSnapshotManagerBenchmarkBase.cs
@@ -12,6 +12,7 @@ using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Host;
 using Microsoft.CodeAnalysis.Razor;
 using Microsoft.CodeAnalysis.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Razor.Serialization;
 using Microsoft.CodeAnalysis.Text;
 using Microsoft.VisualStudio.LanguageServices.Razor.Serialization;
 using Newtonsoft.Json;
diff --git a/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/TagHelperSerializationBenchmark.cs b/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/TagHelperSerializationBenchmark.cs
index f1dcabe640..220f3ca172 100644
--- a/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/TagHelperSerializationBenchmark.cs
+++ b/src/Razor/perf/Microsoft.AspNetCore.Razor.Performance/TagHelperSerializationBenchmark.cs
@@ -7,6 +7,7 @@ using System.IO;
 using System.Text;
 using BenchmarkDotNet.Attributes;
 using Microsoft.AspNetCore.Razor.Language;
+using Microsoft.CodeAnalysis.Razor.Serialization;
 using Microsoft.VisualStudio.LanguageServices.Razor.Serialization;
 using Newtonsoft.Json;