diff --git a/includes/Hooks.php b/includes/Hooks.php
index 8d405b2..47dcba3 100644
--- a/includes/Hooks.php
+++ b/includes/Hooks.php
@@ -7,7 +7,6 @@ use ExtensionRegistry;
 use HTMLForm;
 use MediaWiki\MediaWikiServices;
 use OutputPage;
-use RequestContext;
 use ResourceLoaderContext;
 use Skin;
 use SkinTemplate;
@@ -52,10 +51,6 @@ class Hooks {
 			return;
 		}
 
-		$skinVersionLookup = new SkinVersionLookup(
-			$out->getRequest(), $sk->getUser(), self::getServiceConfig()
-		);
-
 		$mobile = false;
 		if ( ExtensionRegistry::getInstance()->isLoaded( 'MobileFrontend' ) ) {
 
@@ -63,9 +58,9 @@ class Hooks {
 			$mobile = $mobFrontContext->shouldDisplayMobileView();
 		}
 
-		if ( $skinVersionLookup->isLegacy()
-			&& ( $mobile || $sk->getConfig()->get( 'VectorResponsive' ) )
-		) {
+		if (
+			self::isSkinVersionLegacy()
+			&& ( $mobile || $sk->getConfig()->get( 'VectorResponsive' ) ) ) {
 			$out->addMeta( 'viewport', 'width=device-width, initial-scale=1' );
 			$out->addModuleStyles( 'skins.vector.styles.responsive' );
 		}
@@ -158,10 +153,6 @@ class Hooks {
 			return;
 		}
 
-		$skinVersionLookup = new SkinVersionLookup(
-			RequestContext::getMain()->getRequest(), $user, self::getServiceConfig()
-		);
-
 		// Preferences to add.
 		$vectorPrefs = [
 			Constants::PREF_KEY_SKIN_VERSION => [
@@ -174,7 +165,7 @@ class Hooks {
 				// indicates that a prefs-skin-prefs string will be provided.
 				'section' => 'rendering/skin/skin-prefs',
 				// Convert the preference string to a boolean presentation.
-				'default' => $skinVersionLookup->isLegacy() ? '1' : '0',
+				'default' => self::isSkinVersionLegacy() ? '1' : '0',
 				// Only show this section when the Vector skin is checked. The JavaScript client also uses
 				// this state to determine whether to show or hide the whole section.
 				'hide-if' => [ '!==', 'wpskin', Constants::SKIN_NAME ]
@@ -264,20 +255,15 @@ class Hooks {
 			return;
 		}
 
-		$skinVersionLookup = new SkinVersionLookup(
-			$out->getRequest(), $sk->getUser(), self::getServiceConfig()
-		);
-
-		if ( $skinVersionLookup->isLegacy() ) {
-
-			// As of 2020/08/13, this CSS class is referred to by the following deployed extensions:
-			//
-			// - VisualEditor
-			// - CodeMirror
-			// - WikimediaEvents
-			//
-			// See https://codesearch.wmcloud.org/deployed/?q=skin-vector-legacy for an up-to-date
-			// list.
+		// As of 2020/08/13, this CSS class is referred to by the following deployed extensions:
+		//
+		// - VisualEditor
+		// - CodeMirror
+		// - WikimediaEvents
+		//
+		// See https://codesearch.wmcloud.org/deployed/?q=skin-vector-legacy for an up-to-date
+		// list.
+		if ( self::isSkinVersionLegacy() ) {
 			$bodyAttrs['class'] .= ' skin-vector-legacy';
 
 			return;
@@ -313,21 +299,17 @@ class Hooks {
 	 * @param OutputPage $out OutputPage instance calling the hook
 	 */
 	public static function onMakeGlobalVariablesScript( &$vars, OutputPage $out ) {
+		if ( !$out->getSkin() instanceof SkinVector ) {
+			return;
+		}
+
 		$user = $out->getUser();
 
-		if ( $out->getSkin() instanceof SkinVector && $user->isRegistered() ) {
-			$skinVersionLookup = new SkinVersionLookup(
-				$out->getRequest(),
-				$user,
-				self::getServiceConfig()
-			);
-
-			if ( !$skinVersionLookup->isLegacy() ) {
-				$vars[ 'wgVectorDisableSidebarPersistence' ] =
+		if ( $user->isLoggedIn() && self::isSkinVersionLegacy() ) {
+			$vars[ 'wgVectorDisableSidebarPersistence' ] =
 				self::getConfig(
 					Constants::CONFIG_KEY_DISABLE_SIDEBAR_PERSISTENCE
 				);
-			}
 		}
 	}
 
@@ -348,4 +330,15 @@ class Hooks {
 	private static function getServiceConfig() {
 		return MediaWikiServices::getInstance()->getService( Constants::SERVICE_CONFIG );
 	}
+
+	/**
+	 * Gets whether the current skin version is the legacy version.
+	 *
+	 * @see VectorServices::getFeatureManager
+	 *
+	 * @return bool
+	 */
+	private static function isSkinVersionLegacy(): bool {
+		return !VectorServices::getFeatureManager()->isFeatureEnabled( Constants::FEATURE_LATEST_SKIN );
+	}
 }
diff --git a/includes/VectorServices.php b/includes/VectorServices.php
new file mode 100644
index 0000000..e093d32
--- /dev/null
+++ b/includes/VectorServices.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Vector;
+
+use MediaWiki\MediaWikiServices;
+use Vector\FeatureManagement\FeatureManager;
+
+/**
+ * A service locator for services specific to Vector.
+ *
+ * @package Vector
+ * @internal
+ */
+final class VectorServices {
+
+	/**
+	 * Gets the feature manager service.
+	 *
+	 * Per its definition in ServiceWiring.php, the feature manager service is bound to the global
+	 * request and user objects and to the _Vector.Config_ service.
+	 *
+	 * @return FeatureManager
+	 */
+	public static function getFeatureManager(): FeatureManager {
+		return MediaWikiServices::getInstance()->getService( Constants::SERVICE_FEATURE_MANAGER );
+	}
+}
diff --git a/tests/phpunit/integration/VectorHooksTest.php b/tests/phpunit/integration/VectorHooksTest.php
index 06dc481..1ec3bc8 100644
--- a/tests/phpunit/integration/VectorHooksTest.php
+++ b/tests/phpunit/integration/VectorHooksTest.php
@@ -4,6 +4,8 @@
  * @ingroup skins
  */
 
+use Vector\Constants;
+use Vector\FeatureManagement\FeatureManager;
 use Vector\Hooks;
 
 const SKIN_PREFS_SECTION = 'rendering/skin/skin-prefs';
@@ -29,17 +31,21 @@ class VectorHooksTest extends \MediaWikiTestCase {
 		$this->assertSame( $prefs, [], 'No preferences are added.' );
 	}
 
+	private function setFeatureLatestSkinVersionIsEnabled( $isEnabled ) {
+		$featureManager = new FeatureManager();
+		$featureManager->registerSimpleRequirement( Constants::REQUIREMENT_LATEST_SKIN_VERSION, $isEnabled );
+		$featureManager->registerFeature( Constants::FEATURE_LATEST_SKIN, [
+			Constants::REQUIREMENT_LATEST_SKIN_VERSION
+		] );
+
+		$this->setService( Constants::SERVICE_FEATURE_MANAGER, $featureManager );
+	}
+
 	/**
 	 * @covers ::onGetPreferences
 	 */
 	public function testOnGetPreferencesShowPreferencesEnabledSkinSectionFoundLegacy() {
-		$config = new HashConfig( [
-			'VectorShowSkinPreferences' => true,
-			// '1' is Legacy.
-			'VectorDefaultSkinVersionForExistingAccounts' => '1',
-			'VectorDefaultSidebarVisibleForAuthorisedUser' => true
-		] );
-		$this->setService( 'Vector.Config', $config );
+		$this->setFeatureLatestSkinVersionIsEnabled( false );
 
 		$prefs = [
 			'foo' => [],
@@ -75,13 +81,7 @@ class VectorHooksTest extends \MediaWikiTestCase {
 	 * @covers ::onGetPreferences
 	 */
 	public function testOnGetPreferencesShowPreferencesEnabledSkinSectionMissingLegacy() {
-		$config = new HashConfig( [
-			'VectorShowSkinPreferences' => true,
-			// '1' is Legacy.
-			'VectorDefaultSkinVersionForExistingAccounts' => '1',
-			'VectorDefaultSidebarVisibleForAuthorisedUser' => true
-		] );
-		$this->setService( 'Vector.Config', $config );
+		$this->setFeatureLatestSkinVersionIsEnabled( false );
 
 		$prefs = [
 			'foo' => [],
@@ -115,13 +115,7 @@ class VectorHooksTest extends \MediaWikiTestCase {
 	 * @covers ::onGetPreferences
 	 */
 	public function testOnGetPreferencesShowPreferencesEnabledSkinSectionMissingLatest() {
-		$config = new HashConfig( [
-			'VectorShowSkinPreferences' => true,
-			// '2' is latest.
-			'VectorDefaultSkinVersionForExistingAccounts' => '2',
-			'VectorDefaultSidebarVisibleForAuthorisedUser' => true
-		] );
-		$this->setService( 'Vector.Config', $config );
+		$this->setFeatureLatestSkinVersionIsEnabled( true );
 
 		$prefs = [
 			'foo' => [],