diff --git a/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/Frame.Generated.cs b/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/Frame.Generated.cs
index adef63eee8..160d110c54 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/Frame.Generated.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/Frame.Generated.cs
@@ -1,3 +1,5 @@
+// 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.Collections.Generic;
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.Generated.cs b/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.Generated.cs
index e8b118824d..08bdcc099b 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.Generated.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.Generated.cs
@@ -1,3 +1,5 @@
+// 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.Collections.Generic;
diff --git a/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/FrameFeatureCollection.cs b/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/FrameFeatureCollection.cs
index 950f06b730..9f46ddfd11 100644
--- a/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/FrameFeatureCollection.cs
+++ b/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/FrameFeatureCollection.cs
@@ -62,7 +62,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.GeneratedCode
                 typeof(IHttpConnectionFeature)
             };
 
-            return $@"
+            return $@"// 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.Collections.Generic;
 
diff --git a/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/KnownHeaders.cs b/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/KnownHeaders.cs
index d50bdebf46..1003a17e99 100644
--- a/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/KnownHeaders.cs
+++ b/tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/KnownHeaders.cs
@@ -262,7 +262,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.GeneratedCode
                     offset += header.BytesCount;
                 }
             }
-            return $@"
+            return $@"// 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.Collections.Generic;
 using Microsoft.AspNetCore.Server.Kestrel.Internal.Infrastructure;