diff --git a/lib/src/deprecation.dart b/lib/src/deprecation.dart
index 3281e720d..1962ec627 100644
--- a/lib/src/deprecation.dart
+++ b/lib/src/deprecation.dart
@@ -191,15 +191,17 @@ enum Deprecation {
   String toString() => id;
 
   /// Returns the deprecation with a given ID, or null if none exists.
-  static Deprecation? fromId(String id) => Deprecation.values
-      .firstWhereOrNull((deprecation) => deprecation.id == id);
+  static Deprecation? fromId(String id) => Deprecation.values.firstWhereOrNull(
+        (deprecation) => deprecation.id == id,
+      );
 
   /// Returns the set of all deprecations done in or before [version].
   static Set<Deprecation> forVersion(Version version) {
     var range = VersionRange(max: version, includeMax: true);
     return {
       for (var deprecation in Deprecation.values)
-        if (deprecation.deprecatedIn.andThen(range.allows) ?? false) deprecation
+        if (deprecation.deprecatedIn.andThen(range.allows) ?? false)
+          deprecation,
     };
   }
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index ba310f719..efc67893d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -41,7 +41,7 @@ dev_dependencies:
   analyzer: ^6.8.0
   archive: ^3.1.2
   crypto: ^3.0.0
-  dart_style: ^2.0.0
+  dart_style: ^3.0.0
   dartdoc: ">=8.0.14 <8.3.1" # dart-lang/dartdoc#3947
   grinder: ^0.9.0
   node_preamble: ^2.0.2
diff --git a/tool/grind/generate_deprecations.dart b/tool/grind/generate_deprecations.dart
index 21ce6f58e..5590f465c 100644
--- a/tool/grind/generate_deprecations.dart
+++ b/tool/grind/generate_deprecations.dart
@@ -8,6 +8,7 @@ import 'dart:io';
 import 'package:crypto/crypto.dart';
 import 'package:dart_style/dart_style.dart';
 import 'package:grinder/grinder.dart';
+import 'package:pub_semver/pub_semver.dart';
 import 'package:yaml/yaml.dart';
 
 import 'utils.dart';
@@ -78,5 +79,7 @@ void deprecations() {
     fail("Couldn't find block for generated code in lib/src/deprecation.dart");
   }
   var newCode = dartText.replaceFirst(_blockRegex, buffer.toString());
-  dartFile.writeAsStringSync(DartFormatter().format(newCode));
+  dartFile.writeAsStringSync(DartFormatter(
+          languageVersion: Version.parse(Platform.version.split(' ').first))
+      .format(newCode));
 }
diff --git a/tool/grind/synchronize.dart b/tool/grind/synchronize.dart
index de18066d2..8581eccc8 100644
--- a/tool/grind/synchronize.dart
+++ b/tool/grind/synchronize.dart
@@ -16,6 +16,7 @@ import 'package:crypto/crypto.dart';
 import 'package:dart_style/dart_style.dart';
 import 'package:grinder/grinder.dart';
 import 'package:path/path.dart' as p;
+import 'package:pub_semver/pub_semver.dart';
 import 'package:source_span/source_span.dart';
 
 import 'package:sass/src/util/nullable.dart';
@@ -58,7 +59,9 @@ String synchronizeFile(String source) {
   parseFile(path: source, featureSet: FeatureSet.latestLanguageVersion())
       .unit
       .accept(visitor);
-  return DartFormatter().format(visitor.result);
+  return DartFormatter(
+          languageVersion: Version.parse(Platform.version.split(' ').first))
+      .format(visitor.result);
 }
 
 /// The visitor that traverses the asynchronous parse tree and converts it to