diff --git a/pages_restriction.info.yml b/pages_restriction.info.yml
index c3bf45a..e4206f1 100644
--- a/pages_restriction.info.yml
+++ b/pages_restriction.info.yml
@@ -2,7 +2,8 @@ name: Pages Restriction Access
 description: Restrict access from anonymous and regular users to configured pre-defined pages.
 type: module
 core: '8.x'
+core_version_requirement: ^8 || ^9
 package: User interface
 configure: pages_restriction.settings
 dependencies:
   - 'drupal:system (>= 8.5)'
diff --git a/pages_restriction.services.yml b/pages_restriction.services.yml
index a40f771..b82a09e 100644
--- a/pages_restriction.services.yml
+++ b/pages_restriction.services.yml
@@ -1,7 +1,7 @@
 services:
   pages_restriction.event_subscriber:
     class: Drupal\pages_restriction\Event\PagesRestrictionSubscriber
-    arguments: ['@config.factory', '@request_stack', '@path.matcher', '@pages_restriction.helper', '@current_user', '@session', '@path.current', '@path.alias_manager']
+    arguments: ['@config.factory', '@request_stack', '@path.matcher', '@pages_restriction.helper', '@current_user', '@session', '@path.current', '@path_alias.manager']
     tags:
       - { name: event_subscriber, priority: 210}

diff --git a/src/Event/PagesRestrictionSubscriber.php b/src/Event/PagesRestrictionSubscriber.php
index 5bcfa87..da2ca1c 100644
--- a/src/Event/PagesRestrictionSubscriber.php
+++ b/src/Event/PagesRestrictionSubscriber.php
@@ -14,7 +14,7 @@ use Symfony\Component\HttpFoundation\RedirectResponse;
 use Drupal\Core\Session\AccountProxyInterface;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Drupal\Core\Path\CurrentPathStack;
-use Drupal\Core\Path\AliasManagerInterface;
+use Drupal\path_alias\AliasManagerInterface;
 use Drupal\Core\Url;

 /**