diff --git a/src/Passport.php b/src/Passport.php
index d1a6c0e90..d8782905c 100644
--- a/src/Passport.php
+++ b/src/Passport.php
@@ -86,6 +86,13 @@ class Passport
      */
     public static $accessTokenEntity = 'Laravel\Passport\Bridge\AccessToken';
 
+    /**
+     * The bearer token validator class name.
+     *
+     * @var string
+     */
+    public static $bearerTokenValidator = 'League\OAuth2\Server\AuthorizationValidators\BearerTokenValidator';
+
     /**
      * The auth code model class name.
      *
@@ -450,6 +457,17 @@ public static function useAccessTokenEntity($accessTokenEntity)
         static::$accessTokenEntity = $accessTokenEntity;
     }
 
+    /**
+     * Set the custom bearer token validator class name.
+     *
+     * @param  string  $bearerTokenValidator
+     * @return void
+     */
+    public static function useBearerTokenValidator($bearerTokenValidator)
+    {
+        static::$bearerTokenValidator = $bearerTokenValidator;
+    }
+
     /**
      * Set the auth code model class name.
      *
diff --git a/src/PassportServiceProvider.php b/src/PassportServiceProvider.php
index 99e345e17..c30465466 100644
--- a/src/PassportServiceProvider.php
+++ b/src/PassportServiceProvider.php
@@ -308,9 +308,12 @@ protected function registerJWTParser()
     protected function registerResourceServer()
     {
         $this->app->singleton(ResourceServer::class, function ($container) {
+            $accessTokenRepository = $container->make(Bridge\AccessTokenRepository::class);
+
             return new ResourceServer(
-                $container->make(Bridge\AccessTokenRepository::class),
-                $this->makeCryptKey('public')
+                $accessTokenRepository,
+                $this->makeCryptKey('public'),
+                new Passport::$bearerTokenValidator($accessTokenRepository)
             );
         });
     }