diff --git a/pkgs/test_api/lib/src/backend/metadata.dart b/pkgs/test_api/lib/src/backend/metadata.dart
index f63bcf7d2..0e64f8d78 100644
--- a/pkgs/test_api/lib/src/backend/metadata.dart
+++ b/pkgs/test_api/lib/src/backend/metadata.dart
@@ -2,8 +2,6 @@
 // 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:collection';
-
 import 'package:boolean_selector/boolean_selector.dart';
 import 'package:collection/collection.dart';
 
diff --git a/pkgs/test_core/lib/src/runner/engine.dart b/pkgs/test_core/lib/src/runner/engine.dart
index 0ea98b634..036668990 100644
--- a/pkgs/test_core/lib/src/runner/engine.dart
+++ b/pkgs/test_core/lib/src/runner/engine.dart
@@ -3,7 +3,6 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:collection';
 import 'dart:math';
 
 import 'package:async/async.dart' hide Result;