diff --git a/openapi-generator/example/example.dart b/openapi-generator/example/example.dart
index 3a8104d..7553bcf 100644
--- a/openapi-generator/example/example.dart
+++ b/openapi-generator/example/example.dart
@@ -1,3 +1,4 @@
+// Openapi Generator last run: : 2024-11-04T10:28:15.653697
 import 'package:openapi_generator_annotations/openapi_generator_annotations.dart';
 
 @Openapi(
diff --git a/openapi-generator/example/pubspec.yaml b/openapi-generator/example/pubspec.yaml
index f16cc50..4ac39d7 100644
--- a/openapi-generator/example/pubspec.yaml
+++ b/openapi-generator/example/pubspec.yaml
@@ -21,10 +21,10 @@ dependency_overrides:
 #  meta: ^1.2.2
   openapi_generator_annotations:
     path: ../../openapi-generator-annotations
-  openapi_generator:
-    path: ../../openapi-generator
-  openapi_generator_cli:
-    path: ../../openapi-generator-cli
+#   openapi_generator:
+#     path: ../../openapi-generator
+#   openapi_generator_cli:
+#     path: ../../openapi-generator-cli
 
 dependencies:
 #  flutter:
@@ -35,8 +35,8 @@ dependencies:
 dev_dependencies:
 #  flutter_test:
 #    sdk: flutter
-  build_runner:
-  openapi_generator: ^4.10.0
+#   build_runner:
+#   openapi_generator: ^4.10.0
 
 
 # For information on the generic Dart part of this file, see the
diff --git a/openapi-generator/pubspec.yaml b/openapi-generator/pubspec.yaml
index 1402a24..cd39e12 100755
--- a/openapi-generator/pubspec.yaml
+++ b/openapi-generator/pubspec.yaml
@@ -15,7 +15,6 @@ dependencies:
   openapi_generator_cli: '>5.0.2 <7.0.0'
   yaml: ^3.1.2
   http: '>=0.13.1 <=2.0.0'
-  build_runner: '>=1.0.0 <3.0.0'
   logging: '>=1.0.0 <=2.0.0'
 
 dev_dependencies:
@@ -23,5 +22,6 @@ dev_dependencies:
   mockito: ^5.4.4
   build_test: '>=1.2.0 <3.0.0'
   source_gen_test:
+  test_process:
   pedantic:
   coverage: ^1.6.3
diff --git a/openapi-generator/test/builder_test.dart b/openapi-generator/test/builder_test.dart
index 991b987..dacd4bc 100644
--- a/openapi-generator/test/builder_test.dart
+++ b/openapi-generator/test/builder_test.dart
@@ -297,17 +297,20 @@ class TestClassConfig extends OpenapiGeneratorConfig {}
   useNextGen: true,
   cachePath: '${f.path}',
   outputDirectory: '${f.parent.path}/fvm',
+  updateAnnotatedFile: false,
   additionalProperties: AdditionalProperties(
     wrapper: Wrapper.fvm,
   ),
 )
           ''');
-              expect(
-                  generatedOutput, contains('Running source code generation.'));
               expect(
                   generatedOutput,
                   contains(
-                      'fvm pub run build_runner build --delete-conflicting-outputs'));
+                      'Installing dependencies with generated source. fvm pub get'));
+              // expect(
+              //     generatedOutput,
+              //     contains(
+              //         'fvm pub run build_runner build --delete-conflicting-outputs'));
             });
             test('flutterw', () async {
               generatedOutput = await generate('''
@@ -324,12 +327,14 @@ class TestClassConfig extends OpenapiGeneratorConfig {}
   ),
 )
           ''');
-              expect(
-                  generatedOutput, contains('Running source code generation.'));
               expect(
                   generatedOutput,
                   contains(
-                      './flutterw pub run build_runner build --delete-conflicting-outputs'));
+                      'Installing dependencies with generated source. ./flutterw pub get'));
+              // expect(
+              //     generatedOutput,
+              //     contains(
+              //         './flutterw pub run build_runner build --delete-conflicting-outputs'));
             });
           });
           test('without wrapper', () async {
diff --git a/openapi-generator/test/utils.dart b/openapi-generator/test/utils.dart
index f5af68e..8d7cdcd 100644
--- a/openapi-generator/test/utils.dart
+++ b/openapi-generator/test/utils.dart
@@ -2,19 +2,16 @@ import 'dart:io';
 
 import 'package:build/build.dart';
 import 'package:build_test/build_test.dart';
-import 'package:mockito/annotations.dart';
-import 'package:mockito/mockito.dart';
 import 'package:openapi_generator/src/models/output_message.dart';
 import 'package:openapi_generator/src/openapi_generator_runner.dart';
 import 'package:openapi_generator/src/process_runner.dart';
 import 'package:source_gen/source_gen.dart';
-
-@GenerateNiceMocks([MockSpec<ProcessRunner>()])
-import 'utils.mocks.dart';
+import 'package:test_process/test_process.dart';
 
 final String pkgName = 'pkg';
-var _mockProcessRunner = MockProcessRunner();
-final Builder builder = LibraryBuilder(OpenapiGenerator(_mockProcessRunner),
+
+final Builder builder = LibraryBuilder(
+    OpenapiGenerator(ProcessRunnerForTests()),
     generatedExtension: '.openapi_generator');
 final testSpecPath =
     '${Directory.current.path}${Platform.pathSeparator}test${Platform.pathSeparator}specs${Platform.pathSeparator}';
@@ -24,9 +21,6 @@ final testSpecPath =
 /// [path] available so an override for the adds generated comment test can
 /// compare the output.
 Future<String> generate(String source, {String path = 'lib/myapp.dart'}) async {
-  when(_mockProcessRunner.run(any, any, environment: anyNamed('environment')))
-      .thenAnswer((_) async => ProcessResult(0, 0, 'Output', ''));
-
   final spec = File('${testSpecPath}openapi.test.yaml').readAsStringSync();
   var srcs = <String, String>{
     'openapi_generator_annotations|lib/src/openapi_generator_annotations_base.dart':
@@ -35,7 +29,8 @@ Future<String> generate(String source, {String path = 'lib/myapp.dart'}) async {
     'openapi_generator|$path': '''
     import 'package:openapi_generator_annotations/src/openapi_generator_annotations_base.dart';
     $source
-    class MyApp {}  
+    class MyApp {
+    }  
     ''',
     'openapi_generator|openapi-spec.yaml': spec
   };
@@ -60,3 +55,20 @@ Future<String> generate(String source, {String path = 'lib/myapp.dart'}) async {
       String.fromCharCodes(
           writer.assets[AssetId(pkgName, 'lib/value.g.dart')] ?? []);
 }
+
+class ProcessRunnerForTests extends ProcessRunner {
+  @override
+  Future<ProcessResult> run(String executable, List<String> arguments,
+      {Map<String, String>? environment,
+      String? workingDirectory,
+      bool runInShell = false}) {
+    return TestProcess.start(executable, arguments,
+            environment: environment,
+            workingDirectory: workingDirectory,
+            runInShell: runInShell)
+        .then(
+      (value) async => ProcessResult(
+          value.pid, await value.exitCode, value.stdout, value.stderr),
+    );
+  }
+}