diff --git a/authman.services.yml b/authman.services.yml
index 16ee245..27bb81e 100644
--- a/authman.services.yml
+++ b/authman.services.yml
@@ -5,7 +5,7 @@ services:
 
   authman.oauth:
     class: Drupal\authman\AuthmanInstance\AuthmanOauthFactory
-    arguments: ['@entity_type.manager']
+    arguments: ['@entity_type.manager', '@datetime.time']
 
   access_check.authman.authorization_code_receive:
     class: Drupal\authman\Access\AuthmanAuthorizationCodeReceive
diff --git a/src/AuthmanClock.php b/src/AuthmanClock.php
new file mode 100644
index 0000000..63e6ae4
--- /dev/null
+++ b/src/AuthmanClock.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Drupal\authman;
+
+use Drupal\Component\Datetime\TimeInterface;
+use League\OAuth2\Client\Provider\Clock;
+
+/**
+ * Allows OAuth providers to use the Drupal clock.
+ */
+class AuthmanClock extends Clock {
+
+  /**
+   * Time.
+   *
+   * @var \Drupal\Component\Datetime\TimeInterface
+   */
+  protected TimeInterface $time;
+
+  /**
+   * AuthmanClock constructor.
+   *
+   * @param \Drupal\Component\Datetime\TimeInterface $time
+   *   Time.
+   */
+  public function __construct(TimeInterface $time) {
+    $this->time = $time;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function now() {
+    return new \DateTimeImmutable('@' . $this->time->getRequestTime());
+  }
+
+}
diff --git a/src/AuthmanInstance/AuthmanOauthFactory.php b/src/AuthmanInstance/AuthmanOauthFactory.php
index 3baba11..fea4062 100644
--- a/src/AuthmanInstance/AuthmanOauthFactory.php
+++ b/src/AuthmanInstance/AuthmanOauthFactory.php
@@ -4,6 +4,7 @@
 
 namespace Drupal\authman\AuthmanInstance;
 
+use Drupal\authman\AuthmanClock;
 use Drupal\authman\Entity\AuthmanAuthInterface;
 use Drupal\authman\EntityHandlers\AuthmanAuthStorage;
 use Drupal\authman\Exception\AuthmanClientCredentialsException;
@@ -12,6 +13,7 @@
 use Drupal\authman\Exception\AuthmanPluginException;
 use Drupal\authman\Plugin\KeyType\OauthKeyTypeInterface;
 use Drupal\authman\Token\AuthmanAccessToken;
+use Drupal\Component\Datetime\TimeInterface;
 use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Url;
@@ -31,14 +33,24 @@ class AuthmanOauthFactory implements AuthmanOauthFactoryInterface {
    */
   protected $entityTypeManager;
 
+  /**
+   * Time.
+   *
+   * @var \Drupal\Component\Datetime\TimeInterface
+   */
+  protected TimeInterface $time;
+
   /**
    * AuthmanOauthFactory constructor.
    *
    * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager
    *   The entity type manager.
+   * @param \Drupal\Component\Datetime\TimeInterface $time
+   *   Time.
    */
-  public function __construct(EntityTypeManagerInterface $entityTypeManager) {
+  public function __construct(EntityTypeManagerInterface $entityTypeManager, TimeInterface $time) {
     $this->entityTypeManager = $entityTypeManager;
+    $this->time = $time;
   }
 
   /**
@@ -50,9 +62,11 @@ public function get(string $id): AuthmanOauthInstanceInterface {
       throw new \InvalidArgumentException('Invalid ID');
     }
 
+    $clock = new AuthmanClock($this->time);
     $redirectUri = Url::fromRoute('authman.authorization_code.receive', ['authman_auth' => $authmanConfig->id()]);
     $providerOptions = [
       'redirectUri' => $redirectUri->setAbsolute()->toString(TRUE)->getGeneratedUrl(),
+      'clock' => $clock,
     ];
 
     $clientKey = $this->keyStorage()->load($authmanConfig->getClientKeyId());