diff --git a/lib/src/logging.dart b/lib/src/logging.dart
index 702c7c48f3..fd578fbf9a 100644
--- a/lib/src/logging.dart
+++ b/lib/src/logging.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2017, 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:async';
 import 'dart:convert';
 import 'dart:io' show stderr, stdout;
@@ -6,10 +10,6 @@ import 'package:analyzer/file_system/file_system.dart';
 import 'package:cli_util/cli_logging.dart' show Ansi;
 import 'package:dartdoc/dartdoc.dart';
 import 'package:dartdoc/src/dartdoc_options.dart';
-// Copyright (c) 2017, 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 'package:logging/logging.dart';
 
 final _logger = Logger('dartdoc');
@@ -128,7 +128,9 @@ void startLogging(LoggingContext config) {
 
 abstract class LoggingContext implements DartdocOptionContextBase {
   bool get json => optionSet['json'].valueAt(context);
+
   bool get showProgress => optionSet['showProgress'].valueAt(context);
+
   bool get quiet => optionSet['quiet'].valueAt(context);
 }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 9910d4164d..eb28d5ab55 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -13,18 +13,13 @@ dependencies:
   cli_util: '>=0.1.4 <0.3.0'
   crypto: ^2.0.6
   html: '>=0.12.1 <0.15.0'
-  # We don't use http_parser directly; this dep exists to ensure that we get at
-  # least version 3.0.3 to work around an issue with 3.0.2.
-  http_parser: '>=3.0.3 <4.0.0'
   logging: ^0.11.3+1
-  process: ^3.0.5
   markdown: ^2.1.5
   meta: ^1.1.8
   mustache: ^1.1.0
   package_config: '>=0.1.5 <2.0.0'
   path: ^1.3.0
   pub_semver: ^1.3.7
-  stack_trace: ^1.4.2
   yaml: ^2.1.0
 
 dev_dependencies:
@@ -36,7 +31,6 @@ dev_dependencies:
   dhttpd: ^3.0.0
   glob: ^1.1.5
   grinder: ^0.8.2
-  io: ^0.3.0
   http: ^0.12.0
   mockito: ^4.1.1
   pedantic: ^1.9.0
diff --git a/tool/grind.dart b/tool/grind.dart
index 89e0d3e824..0a5d5a9cb8 100644
--- a/tool/grind.dart
+++ b/tool/grind.dart
@@ -9,7 +9,6 @@ import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:dartdoc/src/io_utils.dart';
 import 'package:dartdoc/src/package_meta.dart';
 import 'package:grinder/grinder.dart';
-import 'package:io/io.dart';
 import 'package:path/path.dart' as path;
 import 'package:yaml/yaml.dart' as yaml;
 
@@ -130,6 +129,7 @@ Directory get testPackageDocsDir =>
     _testPackageDocsDir ??= createTempSync('test_package');
 
 Directory _testPackageExperimentsDocsDir;
+
 Directory get testPackageExperimentsDocsDir =>
     _testPackageExperimentsDocsDir ??=
         createTempSync('test_package_experiments');
@@ -761,7 +761,7 @@ class FlutterRepo {
   static Future<FlutterRepo> copyFromExistingFlutterRepo(
       FlutterRepo origRepo, String flutterPath, Map<String, String> env,
       [String label]) async {
-    await copyPath(origRepo.flutterPath, flutterPath);
+    copy(Directory(origRepo.flutterPath), Directory(flutterPath));
     var flutterRepo = FlutterRepo._(flutterPath, env, label);
     return flutterRepo;
   }
@@ -826,7 +826,7 @@ Future<String> _buildPubPackageDocs(
   var pubPackageDirOrig =
       cache.listSync().firstWhere((e) => e.path.contains(pubPackageName));
   var pubPackageDir = Directory.systemTemp.createTempSync(pubPackageName);
-  await copyPath(pubPackageDirOrig.path, pubPackageDir.path);
+  copy(pubPackageDirOrig, pubPackageDir);
 
   if (packageMetaProvider
       .fromDir(PhysicalResourceProvider.INSTANCE.getFolder(pubPackageDir.path))