diff --git a/packages/core/lib/flutter_generator.dart b/packages/core/lib/flutter_generator.dart
index 4663c501..d56e335e 100644
--- a/packages/core/lib/flutter_generator.dart
+++ b/packages/core/lib/flutter_generator.dart
@@ -34,7 +34,6 @@ class FlutterGenerator {
     final output = config.pubspec.flutterGen.output;
     final lineLength = config.pubspec.flutterGen.lineLength;
     final formatter = DartFormatter(
-      languageVersion: DartFormatter.latestLanguageVersion,
       pageWidth: lineLength,
       lineEnding: '\n',
     );
diff --git a/packages/core/pubspec.yaml b/packages/core/pubspec.yaml
index 92539d37..9e89fc15 100644
--- a/packages/core/pubspec.yaml
+++ b/packages/core/pubspec.yaml
@@ -24,7 +24,7 @@ dependencies:
   json_annotation: ^4.4.0
   glob: ^2.0.0
 
-  dart_style: '>=2.2.4 <4.0.0'
+  dart_style: '>=2.2.4 <3.0.0'
   archive: '>=3.4.0 <5.0.0'
   args: ^2.0.0
   pub_semver: ^2.0.0
diff --git a/packages/core/test/assets_gen_test.dart b/packages/core/test/assets_gen_test.dart
index e652dbcf..2d5684a1 100644
--- a/packages/core/test/assets_gen_test.dart
+++ b/packages/core/test/assets_gen_test.dart
@@ -60,7 +60,6 @@ void main() {
       final pubspec = File('test_resources/pubspec_assets_no_list.yaml');
       final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
-        languageVersion: dartFormatterLanguageVersion,
         pageWidth: config.pubspec.flutterGen.lineLength,
         lineEnding: '\n',
       );
diff --git a/packages/core/test/colors_gen_test.dart b/packages/core/test/colors_gen_test.dart
index 12f7d6e8..67fa91d8 100644
--- a/packages/core/test/colors_gen_test.dart
+++ b/packages/core/test/colors_gen_test.dart
@@ -23,7 +23,6 @@ void main() {
       final pubspec = File('test_resources/pubspec_colors_no_inputs.yaml');
       final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
-        languageVersion: dartFormatterLanguageVersion,
         pageWidth: config.pubspec.flutterGen.lineLength,
         lineEnding: '\n',
       );
@@ -42,7 +41,6 @@ void main() {
       final pubspec = File('test_resources/pubspec_colors_no_inputs_list.yaml');
       final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
-        languageVersion: dartFormatterLanguageVersion,
         pageWidth: config.pubspec.flutterGen.lineLength,
         lineEnding: '\n',
       );
diff --git a/packages/core/test/fonts_gen_test.dart b/packages/core/test/fonts_gen_test.dart
index 98159660..6e014ee9 100644
--- a/packages/core/test/fonts_gen_test.dart
+++ b/packages/core/test/fonts_gen_test.dart
@@ -23,7 +23,6 @@ void main() {
         File('test_resources/pubspec_fonts_no_family.yaml'),
       );
       final formatter = DartFormatter(
-        languageVersion: dartFormatterLanguageVersion,
         pageWidth: config.pubspec.flutterGen.lineLength,
         lineEnding: '\n',
       );
diff --git a/packages/core/test/gen_test_helper.dart b/packages/core/test/gen_test_helper.dart
index 3f781143..234f86d0 100644
--- a/packages/core/test/gen_test_helper.dart
+++ b/packages/core/test/gen_test_helper.dart
@@ -9,8 +9,6 @@ import 'package:flutter_gen_core/settings/config.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 
-final dartFormatterLanguageVersion = DartFormatter.latestLanguageVersion;
-
 Future<void> clearTestResults() async {}
 
 Future<List<String>> runAssetsGen(
@@ -36,7 +34,6 @@ Future<List<String>> runAssetsGen(
   stdout.writeln('[DEBUG] test: Generate from API...');
   final config = loadPubspecConfig(pubspecFile, buildFile: buildFile);
   final formatter = DartFormatter(
-    languageVersion: dartFormatterLanguageVersion,
     pageWidth: config.pubspec.flutterGen.lineLength,
     lineEnding: '\n',
   );
@@ -80,7 +77,6 @@ Future<List<String>> runColorsGen(
   final pubspecFile = File(pubspec);
   final config = loadPubspecConfig(pubspecFile);
   final formatter = DartFormatter(
-    languageVersion: dartFormatterLanguageVersion,
     pageWidth: config.pubspec.flutterGen.lineLength,
     lineEnding: '\n',
   );
@@ -124,7 +120,6 @@ Future<List<String>> runFontsGen(
   final pubspecFile = File(pubspec);
   final config = loadPubspecConfig(pubspecFile);
   final formatter = DartFormatter(
-    languageVersion: dartFormatterLanguageVersion,
     pageWidth: config.pubspec.flutterGen.lineLength,
     lineEnding: '\n',
   );