diff --git a/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/JsonArrayPool.cs b/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/JsonArrayPool.cs
index 057f7a5e44..5b4ae0e69e 100644
--- a/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/JsonArrayPool.cs
+++ b/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/JsonArrayPool.cs
@@ -1,4 +1,7 @@
-using System;
+// 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 System;
 using System.Buffers;
 using Newtonsoft.Json;
 
diff --git a/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/Utf8BufferTextReader.cs b/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/Utf8BufferTextReader.cs
index 22509c02d4..f09e475fb6 100644
--- a/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/Utf8BufferTextReader.cs
+++ b/src/Microsoft.AspNetCore.SignalR.Common/Internal/Protocol/Utf8BufferTextReader.cs
@@ -1,4 +1,7 @@
-using System;
+// 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 System;
 using System.IO;
 using System.Runtime.InteropServices;
 using System.Text;