diff --git a/lib/src/common_server_impl.dart b/lib/src/common_server_impl.dart
index 214d5a7..b4108ca 100644
--- a/lib/src/common_server_impl.dart
+++ b/lib/src/common_server_impl.dart
@@ -8,10 +8,8 @@
 import 'dart:convert';
 
 import 'package:crypto/crypto.dart';
-import 'package:http/http.dart' as http;
 import 'package:logging/logging.dart';
 import 'package:pedantic/pedantic.dart';
-import 'package:protobuf/protobuf.dart' as $pb;
 
 import '../version.dart';
 import 'analysis_servers.dart';
@@ -34,133 +32,6 @@
   String get version;
 }
 
-class CommonServerImplProxy implements CommonServerImpl {
-  const CommonServerImplProxy(this._proxyTarget);
-  final String _proxyTarget;
-  final bool _nullSafety = false;
-
-  Future<R> _postToProxy<R extends $pb.GeneratedMessage>(
-      String url, $pb.GeneratedMessage request, R responseProto) async {
-    final proxyResponse = http.post(url,
-        headers: {'Content-Type': 'application/json; charset=utf-8'},
-        body: _jsonEncoder.convert(request.toProto3Json()));
-
-    return proxyResponse.then((response) async {
-      if (response.statusCode == 200) {
-        return responseProto
-          ..mergeFromProto3Json(JsonDecoder().convert(response.body));
-      } else {
-        final err = proto.BadRequest.create()
-          ..mergeFromProto3Json(JsonDecoder().convert(response.body));
-        throw BadRequest(err.error.message);
-      }
-    });
-  }
-
-  @override
-  Future<proto.AnalysisResults> analyze(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/analyze';
-    return _postToProxy(url, request, proto.AnalysisResults.create());
-  }
-
-  @override
-  Future<proto.AssistsResponse> assists(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/assists';
-    return _postToProxy(url, request, proto.AssistsResponse.create());
-  }
-
-  @override
-  Future<proto.CompileResponse> compile(proto.CompileRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/compile';
-    return _postToProxy(url, request, proto.CompileResponse.create());
-  }
-
-  @override
-  Future<proto.CompileDDCResponse> compileDDC(proto.CompileDDCRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/compileDDC';
-    return _postToProxy(url, request, proto.CompileDDCResponse.create());
-  }
-
-  @override
-  Future<proto.CompleteResponse> complete(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/complete';
-    return _postToProxy(url, request, proto.CompleteResponse.create());
-  }
-
-  @override
-  Future<proto.DocumentResponse> document(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/document';
-    return _postToProxy(url, request, proto.DocumentResponse.create());
-  }
-
-  @override
-  Future<proto.FixesResponse> fixes(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/fixes';
-    return _postToProxy(url, request, proto.FixesResponse.create());
-  }
-
-  @override
-  Future<proto.FormatResponse> format(proto.SourceRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/format';
-    return _postToProxy(url, request, proto.FormatResponse.create());
-  }
-
-  @override
-  Future<proto.VersionResponse> version(proto.VersionRequest request) {
-    final url = '${_proxyTarget}api/dartservices/v2/version';
-    return _postToProxy(url, request, proto.VersionResponse.create());
-  }
-
-  @override
-  Future<String> _checkCache(String query) => null;
-
-  @override
-  Future<proto.CompileDDCResponse> _compileDDC(String source) => null;
-
-  @override
-  Future<proto.CompileResponse> _compileDart2js(String source,
-          {bool returnSourceMap = false}) =>
-      null;
-
-  @override
-  Future<void> _setCache(String query, String result) => null;
-
-  @override
-  bool get analysisServersRunning => true;
-
-  @override
-  Future<void> init() => null;
-
-  @override
-  bool get isHealthy => true;
-
-  @override
-  bool get isRestarting => false;
-
-  @override
-  Future<dynamic> shutdown() => null;
-
-  @override
-  AnalysisServersWrapper get _analysisServers => null;
-
-  @override
-  Compiler get _compiler => null;
-
-  @override
-  ServerCache get _cache => null;
-
-  @override
-  ServerContainer get _container => null;
-
-  @override
-  set _analysisServers(AnalysisServersWrapper analysisServers) => null;
-
-  @override
-  set _compiler(Compiler compiler) => null;
-}
-
-final JsonEncoder _jsonEncoder = const JsonEncoder.withIndent('  ');
-
 class CommonServerImpl {
   final ServerContainer _container;
   final ServerCache _cache;
diff --git a/pubspec.lock b/pubspec.lock
index e667b2d..6cbbbfc 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -42,7 +42,7 @@
       name: bazel_worker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.25"
+    version: "1.0.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -63,7 +63,7 @@
       name: build_config
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.5"
+    version: "0.4.6"
   build_daemon:
     dependency: transitive
     description:
@@ -98,14 +98,14 @@
       name: built_collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.3.2"
+    version: "5.0.0"
   built_value:
     dependency: transitive
     description:
       name: built_value
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.1.0"
+    version: "8.0.4"
   charcode:
     dependency: transitive
     description:
@@ -154,7 +154,7 @@
       name: convert
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "3.0.0"
   coverage:
     dependency: "direct dev"
     description:
@@ -168,7 +168,7 @@
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.1"
   dart_style:
     dependency: transitive
     description:
@@ -189,7 +189,7 @@
       name: expected_output
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.2"
+    version: "2.0.0"
   file:
     dependency: transitive
     description:
@@ -203,7 +203,7 @@
       name: fixnum
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.10.11"
+    version: "1.0.0"
   glob:
     dependency: transitive
     description:
@@ -301,7 +301,7 @@
       name: mime
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.7"
+    version: "1.0.0"
   mock_request:
     dependency: "direct dev"
     description:
@@ -350,14 +350,14 @@
       name: protobuf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.3"
+    version: "2.0.0"
   pub_semver:
     dependency: transitive
     description:
       name: pub_semver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.4.4"
+    version: "2.0.0"
   pubspec_parse:
     dependency: transitive
     description:
@@ -371,7 +371,7 @@
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.1"
   shelf:
     dependency: "direct main"
     description:
@@ -420,7 +420,7 @@
       name: source_gen
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.10+2"
+    version: "0.9.10+3"
   source_map_stack_trace:
     dependency: transitive
     description:
@@ -525,14 +525,14 @@
       name: vm_service
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.5.0"
+    version: "6.2.0"
   watcher:
     dependency: transitive
     description:
       name: watcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.7+15"
+    version: "1.0.0"
   web_socket_channel:
     dependency: transitive
     description:
@@ -553,6 +553,6 @@
       name: yaml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.1"
+    version: "3.1.0"
 sdks:
   dart: ">=2.12.0 <3.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 80d041b..dfb0175 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,15 +9,15 @@
   analysis_server_lib: ^0.1.4
   analyzer: ^0.41.2
   args: ^2.0.0
-  bazel_worker: ^0.1.23
-  crypto: ^2.0.0
+  bazel_worker: ^1.0.0
+  crypto: ^3.0.1
   dartis: ^0.5.0
   http: ^0.12.0
   logging: ^0.11.0
   meta: ^1.1.8
   path: ^1.6.2
-  protobuf: ^1.0.1
-  quiver: ^2.0.3
+  protobuf: ^2.0.0
+  quiver: ^3.0.1
   shelf: ^0.7.5
   shelf_router: ^0.7.0+1
 
@@ -26,7 +26,7 @@
   build_runner: ^1.10.6
   codemirror: ^0.5.6
   coverage: ^0.15.2
-  expected_output: ^1.2.0
+  expected_output: ^2.0.0
   grinder: ^0.9.0
   mock_request: ^1.0.7
   pedantic: ^1.11.0
diff --git a/tool/grind.dart b/tool/grind.dart
index 4162143..1200768 100644
--- a/tool/grind.dart
+++ b/tool/grind.dart
@@ -50,18 +50,6 @@
       arguments: ['bin/server_dev.dart', '--port', '8084', '--null-safety']);
 }
 
-@Task()
-@Depends(buildStorageArtifacts)
-Future<void> serveWithProxyTarget() async {
-  await runWithLogging(Platform.executable, arguments: [
-    'bin/server_dev.dart',
-    '--port',
-    '8082',
-    '--proxy-target',
-    'https://v1.api.dartpad.dev/'
-  ]);
-}
-
 const _dartImageName = 'google/dart';
 final _dockerVersionMatcher = RegExp('^FROM $_dartImageName:(.*)\$');
 const _dockerFileName = 'cloud_run.Dockerfile';