diff --git a/pkgs/cronet_http/example/pubspec.yaml b/pkgs/cronet_http/example/pubspec.yaml
index 122e2833a3..5d94a3944e 100644
--- a/pkgs/cronet_http/example/pubspec.yaml
+++ b/pkgs/cronet_http/example/pubspec.yaml
@@ -17,7 +17,7 @@ dependencies:
   provider: ^6.1.1
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   flutter_test:
     sdk: flutter
   http_client_conformance_tests:
diff --git a/pkgs/cronet_http/pubspec.yaml b/pkgs/cronet_http/pubspec.yaml
index 49fefbaf23..77a992f3b5 100644
--- a/pkgs/cronet_http/pubspec.yaml
+++ b/pkgs/cronet_http/pubspec.yaml
@@ -16,7 +16,7 @@ dependencies:
   jni: ^0.9.2
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   jnigen: ^0.9.2
   xml: ^6.1.0
   yaml_edit: ^2.0.3
diff --git a/pkgs/cupertino_http/example/pubspec.yaml b/pkgs/cupertino_http/example/pubspec.yaml
index ba79752e48..a57f39fd05 100644
--- a/pkgs/cupertino_http/example/pubspec.yaml
+++ b/pkgs/cupertino_http/example/pubspec.yaml
@@ -22,7 +22,7 @@ dependencies:
 dev_dependencies:
   convert: ^3.1.1
   crypto: ^3.0.3
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   ffi: ^2.0.1
   flutter_test:
     sdk: flutter
diff --git a/pkgs/cupertino_http/lib/src/cupertino_web_socket.dart b/pkgs/cupertino_http/lib/src/cupertino_web_socket.dart
index 43095ff68f..9884ffe237 100644
--- a/pkgs/cupertino_http/lib/src/cupertino_web_socket.dart
+++ b/pkgs/cupertino_http/lib/src/cupertino_web_socket.dart
@@ -166,7 +166,7 @@ class CupertinoWebSocket implements WebSocket {
     }
     _task
         .sendMessage(URLSessionWebSocketMessage.fromData(Data.fromList(b)))
-        .then((_) => _, onError: _closeConnectionWithError);
+        .then((value) => value, onError: _closeConnectionWithError);
   }
 
   @override
@@ -176,7 +176,7 @@ class CupertinoWebSocket implements WebSocket {
     }
     _task
         .sendMessage(URLSessionWebSocketMessage.fromString(s))
-        .then((_) => _, onError: _closeConnectionWithError);
+        .then((value) => value, onError: _closeConnectionWithError);
   }
 
   @override
diff --git a/pkgs/cupertino_http/pubspec.yaml b/pkgs/cupertino_http/pubspec.yaml
index 44a1d9754f..e34117dc29 100644
--- a/pkgs/cupertino_http/pubspec.yaml
+++ b/pkgs/cupertino_http/pubspec.yaml
@@ -19,7 +19,7 @@ dependencies:
   web_socket: ^0.1.0
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   ffigen: ^11.0.0
 
 flutter:
diff --git a/pkgs/flutter_http_example/pubspec.yaml b/pkgs/flutter_http_example/pubspec.yaml
index 7d0f0892ce..b3b3ef50f7 100644
--- a/pkgs/flutter_http_example/pubspec.yaml
+++ b/pkgs/flutter_http_example/pubspec.yaml
@@ -20,7 +20,7 @@ dependencies:
   provider: ^6.0.5
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   flutter_test:
     sdk: flutter
   integration_test:
diff --git a/pkgs/http/lib/testing.dart b/pkgs/http/lib/testing.dart
index 07b5381d6e..4ff7bf862e 100644
--- a/pkgs/http/lib/testing.dart
+++ b/pkgs/http/lib/testing.dart
@@ -22,7 +22,7 @@
 ///           200,
 ///           headers: {'content-type': 'application/json'});
 ///     });
-library http.testing;
+library;
 
 import 'src/mock_client.dart';
 
diff --git a/pkgs/http/pubspec.yaml b/pkgs/http/pubspec.yaml
index b133164d81..52352be343 100644
--- a/pkgs/http/pubspec.yaml
+++ b/pkgs/http/pubspec.yaml
@@ -18,7 +18,7 @@ dependencies:
   web: ^0.5.0
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   fake_async: ^1.2.0
   http_client_conformance_tests:
     path: ../http_client_conformance_tests/
diff --git a/pkgs/http_client_conformance_tests/pubspec.yaml b/pkgs/http_client_conformance_tests/pubspec.yaml
index f904b2d0b3..c3861ffc15 100644
--- a/pkgs/http_client_conformance_tests/pubspec.yaml
+++ b/pkgs/http_client_conformance_tests/pubspec.yaml
@@ -17,4 +17,4 @@ dependencies:
   test: ^1.21.2
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
diff --git a/pkgs/java_http/pubspec.yaml b/pkgs/java_http/pubspec.yaml
index c04429a993..129bc08e47 100644
--- a/pkgs/java_http/pubspec.yaml
+++ b/pkgs/java_http/pubspec.yaml
@@ -16,7 +16,7 @@ dependencies:
   path: ^1.8.0
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   http_client_conformance_tests:
     path: ../http_client_conformance_tests/
   jnigen: ^0.5.0
diff --git a/pkgs/ok_http/pubspec.yaml b/pkgs/ok_http/pubspec.yaml
index 2ea7a6a665..68ff974261 100644
--- a/pkgs/ok_http/pubspec.yaml
+++ b/pkgs/ok_http/pubspec.yaml
@@ -18,7 +18,7 @@ dependencies:
   plugin_platform_interface: ^2.0.2
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   jnigen: ^0.9.1
 
 flutter:
diff --git a/pkgs/web_socket/pubspec.yaml b/pkgs/web_socket/pubspec.yaml
index fdc7a7821c..cd7cf31fd9 100644
--- a/pkgs/web_socket/pubspec.yaml
+++ b/pkgs/web_socket/pubspec.yaml
@@ -9,7 +9,7 @@ environment:
   sdk: ^3.3.0
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   test: ^1.24.0
   web_socket_conformance_tests:
     path: ../web_socket_conformance_tests/
diff --git a/pkgs/web_socket_conformance_tests/pubspec.yaml b/pkgs/web_socket_conformance_tests/pubspec.yaml
index 2c7ffda0c2..84329c461e 100644
--- a/pkgs/web_socket_conformance_tests/pubspec.yaml
+++ b/pkgs/web_socket_conformance_tests/pubspec.yaml
@@ -18,4 +18,4 @@ dependencies:
   web_socket: ^0.1.0
 
 dev_dependencies:
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0