diff --git a/ios_app_clip/test/widget_test.dart b/ios_app_clip/test/widget_test.dart
index ad6f08f3b..50e99310f 100644
--- a/ios_app_clip/test/widget_test.dart
+++ b/ios_app_clip/test/widget_test.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 // This is a basic Flutter widget test.
 //
 // To perform an interaction with a widget in your test, use the WidgetTester
diff --git a/place_tracker/lib/main.dart b/place_tracker/lib/main.dart
index 9d61258e4..899b3a25e 100644
--- a/place_tracker/lib/main.dart
+++ b/place_tracker/lib/main.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
diff --git a/place_tracker/lib/place.dart b/place_tracker/lib/place.dart
index cb2812eff..6f825fb75 100644
--- a/place_tracker/lib/place.dart
+++ b/place_tracker/lib/place.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/material.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
 
diff --git a/place_tracker/lib/place_details.dart b/place_tracker/lib/place_details.dart
index 06e7cbbb5..582583eba 100644
--- a/place_tracker/lib/place_details.dart
+++ b/place_tracker/lib/place_details.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
diff --git a/place_tracker/lib/place_list.dart b/place_tracker/lib/place_list.dart
index 0fe138821..88d5a7656 100644
--- a/place_tracker/lib/place_list.dart
+++ b/place_tracker/lib/place_list.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
diff --git a/place_tracker/lib/place_map.dart b/place_tracker/lib/place_map.dart
index ae0f00f62..b2d81453e 100644
--- a/place_tracker/lib/place_map.dart
+++ b/place_tracker/lib/place_map.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. 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:async';
 import 'dart:math';
 
diff --git a/place_tracker/lib/place_tracker_app.dart b/place_tracker/lib/place_tracker_app.dart
index 6fdcb4114..ab28b4a4f 100644
--- a/place_tracker/lib/place_tracker_app.dart
+++ b/place_tracker/lib/place_tracker_app.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/material.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
 import 'package:provider/provider.dart';
diff --git a/place_tracker/lib/stub_data.dart b/place_tracker/lib/stub_data.dart
index 984828b5c..d97b15039 100644
--- a/place_tracker/lib/stub_data.dart
+++ b/place_tracker/lib/stub_data.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:google_maps_flutter/google_maps_flutter.dart';
 
 import 'place.dart';
diff --git a/place_tracker/test/widget_test.dart b/place_tracker/test/widget_test.dart
index f1181b0c4..34a5df6ac 100644
--- a/place_tracker/test/widget_test.dart
+++ b/place_tracker/test/widget_test.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 // This is a basic Flutter widget test.
 // To perform an interaction with a widget in your test, use the WidgetTester utility that Flutter
 // provides. For example, you can send tap and scroll gestures. You can also use WidgetTester to
diff --git a/platform_design/lib/main.dart b/platform_design/lib/main.dart
index 00cb3c302..623bc4cd4 100644
--- a/platform_design/lib/main.dart
+++ b/platform_design/lib/main.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
diff --git a/platform_design/lib/news_tab.dart b/platform_design/lib/news_tab.dart
index f41a6fcfe..7a447c9ba 100644
--- a/platform_design/lib/news_tab.dart
+++ b/platform_design/lib/news_tab.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
diff --git a/platform_design/lib/profile_tab.dart b/platform_design/lib/profile_tab.dart
index 190064a50..53d8f0850 100644
--- a/platform_design/lib/profile_tab.dart
+++ b/platform_design/lib/profile_tab.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
diff --git a/platform_design/lib/settings_tab.dart b/platform_design/lib/settings_tab.dart
index fde9b9efc..01ec1b99d 100644
--- a/platform_design/lib/settings_tab.dart
+++ b/platform_design/lib/settings_tab.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
diff --git a/platform_design/lib/song_detail_tab.dart b/platform_design/lib/song_detail_tab.dart
index 1f5045a98..180f34dd1 100644
--- a/platform_design/lib/song_detail_tab.dart
+++ b/platform_design/lib/song_detail_tab.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
diff --git a/platform_design/lib/songs_tab.dart b/platform_design/lib/songs_tab.dart
index 32b7fa87e..4270d40f1 100644
--- a/platform_design/lib/songs_tab.dart
+++ b/platform_design/lib/songs_tab.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
diff --git a/platform_design/lib/utils.dart b/platform_design/lib/utils.dart
index fbec9b8c3..b88d4d669 100644
--- a/platform_design/lib/utils.dart
+++ b/platform_design/lib/utils.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. 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:math';
 
 import 'package:english_words/english_words.dart';
diff --git a/platform_design/lib/widgets.dart b/platform_design/lib/widgets.dart
index e675d0fe6..e22f9f1f2 100644
--- a/platform_design/lib/widgets.dart
+++ b/platform_design/lib/widgets.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
diff --git a/platform_design/test/widget_test.dart b/platform_design/test/widget_test.dart
index 9b29041d5..a21cb265f 100644
--- a/platform_design/test/widget_test.dart
+++ b/platform_design/test/widget_test.dart
@@ -1,3 +1,7 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';