diff --git a/pkg/analyzer/lib/src/dart/analysis/experiments.dart b/pkg/analyzer/lib/src/dart/analysis/experiments.dart
index f03c6aafa78..8bff97a1512 100644
--- a/pkg/analyzer/lib/src/dart/analysis/experiments.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/experiments.dart
@@ -40,9 +40,6 @@ class ExperimentStatus with _CurrentState implements FeatureSet {
   /// The current language version.
   static final Version currentVersion = Version.parse(_currentVersion);
 
-  /// The language version to use in tests.
-  static final Version testingSdkLanguageVersion = Version.parse('2.10.0');
-
   /// The latest known language version.
   static final Version latestSdkLanguageVersion = Version.parse('2.13.0');
 
diff --git a/pkg/analyzer/lib/src/generated/testing/element_factory.dart b/pkg/analyzer/lib/src/generated/testing/element_factory.dart
index b53f44ca889..a33890a513e 100644
--- a/pkg/analyzer/lib/src/generated/testing/element_factory.dart
+++ b/pkg/analyzer/lib/src/generated/testing/element_factory.dart
@@ -8,7 +8,6 @@ import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/nullability_suffix.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/analysis/session.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ -203,8 +202,8 @@ class ElementFactory {
     return spec;
   }
 
-  static LibraryElementImpl library(AnalysisContext context, String libraryName,
-      {bool isNonNullableByDefault = true}) {
+  static LibraryElementImpl library(
+      AnalysisContext context, String libraryName) {
     String fileName = "/$libraryName.dart";
     CompilationUnitElementImpl unit = compilationUnit(fileName);
     LibraryElementImpl library = LibraryElementImpl(
@@ -213,10 +212,7 @@ class ElementFactory {
       libraryName,
       0,
       libraryName.length,
-      FeatureSet.fromEnableFlags2(
-        sdkLanguageVersion: ExperimentStatus.testingSdkLanguageVersion,
-        flags: isNonNullableByDefault ? [EnableString.non_nullable] : [],
-      ),
+      FeatureSet.latestLanguageVersion(),
     );
     library.definingCompilationUnit = unit;
     return library;
diff --git a/pkg/analyzer/test/generated/element_resolver_test.dart b/pkg/analyzer/test/generated/element_resolver_test.dart
index 1d3df593700..e45489d168c 100644
--- a/pkg/analyzer/test/generated/element_resolver_test.dart
+++ b/pkg/analyzer/test/generated/element_resolver_test.dart
@@ -716,8 +716,7 @@ class ElementResolverTest with ResourceProviderMixin, ElementsTypesMixin {
     Source source = FileSource(getFile("/test.dart"));
     CompilationUnitElementImpl unit = CompilationUnitElementImpl();
     unit.librarySource = unit.source = source;
-    _definingLibrary =
-        ElementFactory.library(context, "test", isNonNullableByDefault: false);
+    _definingLibrary = ElementFactory.library(context, "test");
     _definingLibrary.definingCompilationUnit = unit;
 
     _definingLibrary.typeProvider = context.typeProviderLegacy;
diff --git a/pkg/analyzer/test/generated/elements_types_mixin.dart b/pkg/analyzer/test/generated/elements_types_mixin.dart
index c201074e419..8c01ffe446f 100644
--- a/pkg/analyzer/test/generated/elements_types_mixin.dart
+++ b/pkg/analyzer/test/generated/elements_types_mixin.dart
@@ -7,7 +7,6 @@ import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/nullability_suffix.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/dart/element/type_provider.dart';
-import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/analysis/session.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ -374,12 +373,7 @@ mixin ElementsTypesMixin {
       uriStr,
       -1,
       0,
-      FeatureSet.fromEnableFlags2(
-        sdkLanguageVersion: ExperimentStatus.testingSdkLanguageVersion,
-        flags: typeSystem.isNonNullableByDefault
-            ? [EnableString.non_nullable]
-            : [],
-      ),
+      FeatureSet.latestLanguageVersion(),
     );
     library.typeSystem = typeSystem;
     library.typeProvider = typeSystem.typeProvider;
diff --git a/pkg/analyzer/test/src/dart/analysis/base.dart b/pkg/analyzer/test/src/dart/analysis/base.dart
index 1bb79b1056f..536922f77e1 100644
--- a/pkg/analyzer/test/src/dart/analysis/base.dart
+++ b/pkg/analyzer/test/src/dart/analysis/base.dart
@@ -8,7 +8,6 @@ import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/context/packages.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/status.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
@@ -40,8 +39,6 @@ class BaseAnalysisDriverTest with ResourceProviderMixin {
   late final String testFile;
   late final String testCode;
 
-  List<String> enabledExperiments = [];
-
   void addTestFile(String content, {bool priority = false}) {
     testCode = content;
     newFile(testFile, content: content);
@@ -98,10 +95,7 @@ class BaseAnalysisDriverTest with ResourceProviderMixin {
 
   AnalysisOptionsImpl createAnalysisOptions() => AnalysisOptionsImpl()
     ..useFastaParser = true
-    ..contextFeatures = FeatureSet.fromEnableFlags2(
-      sdkLanguageVersion: ExperimentStatus.testingSdkLanguageVersion,
-      flags: enabledExperiments,
-    );
+    ..contextFeatures = FeatureSet.latestLanguageVersion();
 
   int findOffset(String search) {
     int offset = testCode.indexOf(search);