diff --git a/pkgs/ffigen/example/ffinative/config.yaml b/pkgs/ffigen/example/ffinative/config.yaml
index f24eb25c5..002d7feda 100644
--- a/pkgs/ffigen/example/ffinative/config.yaml
+++ b/pkgs/ffigen/example/ffinative/config.yaml
@@ -9,6 +9,10 @@ headers:
   entry-points:
     - 'headers/example.h'
 preamble: |
+  // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+  // for details. All rights reserved. Use of this source code is governed by a
+  // BSD-style license that can be found in the LICENSE file.
+
   // ignore_for_file: deprecated_member_use
 functions:
   symbol-address:
diff --git a/pkgs/ffigen/example/ffinative/lib/generated_bindings.dart b/pkgs/ffigen/example/ffinative/lib/generated_bindings.dart
index ec9666f49..0d952c478 100644
--- a/pkgs/ffigen/example/ffinative/lib/generated_bindings.dart
+++ b/pkgs/ffigen/example/ffinative/lib/generated_bindings.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 // ignore_for_file: deprecated_member_use
 
 // AUTO GENERATED FILE, DO NOT EDIT.
diff --git a/pkgs/ffigen/lib/src/code_generator/utils.dart b/pkgs/ffigen/lib/src/code_generator/utils.dart
index b34b9dcda..67d6adfd1 100644
--- a/pkgs/ffigen/lib/src/code_generator/utils.dart
+++ b/pkgs/ffigen/lib/src/code_generator/utils.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 import 'dart_keywords.dart';
 import 'writer.dart';