diff --git a/composer.json b/composer.json
index d9ddbbcf..0363fe31 100644
--- a/composer.json
+++ b/composer.json
@@ -19,20 +19,20 @@
         "php": "^8.0",
         "ext-json": "*",
         "codeception/lib-innerbrowser": "^3.1.1",
-        "codeception/codeception": "^5.0.0-RC1"
+        "codeception/codeception": "^5.0.0-RC3"
     },
     "require-dev": {
         "codeception/module-asserts": "^3.0",
         "codeception/module-doctrine2": "^3.0",
         "doctrine/orm": "^2.10",
-        "symfony/form": "^4.4 | ^5.0",
-        "symfony/framework-bundle": "^4.4 | ^5.0",
-        "symfony/http-kernel": "^4.4 | ^5.0",
-        "symfony/mailer": "^4.4 | ^5.0",
-        "symfony/routing": "^4.4 | ^5.0",
-        "symfony/security-bundle": "^4.4 | ^5.0",
-        "symfony/twig-bundle": "^4.4 | ^5.0",
-        "vlucas/phpdotenv": "^4.2 | ^5.3"
+        "symfony/form": "^4.4 | ^5.0 | ^6.0",
+        "symfony/framework-bundle": "^4.4 | ^5.0 | ^6.0",
+        "symfony/http-kernel": "^4.4 | ^5.0 | ^6.0",
+        "symfony/mailer": "^4.4 | ^5.0 | ^6.0",
+        "symfony/routing": "^4.4 | ^5.0 | ^6.0",
+        "symfony/security-bundle": "^4.4 | ^5.0 | ^6.0",
+        "symfony/twig-bundle": "^4.4 | ^5.0 | ^6.0",
+        "vlucas/phpdotenv": "^4.2 | ^5.4"
     },
     "suggest": {
         "codeception/module-asserts": "Include traditional PHPUnit assertions in your tests",
diff --git a/src/Codeception/Module/Symfony.php b/src/Codeception/Module/Symfony.php
index 1d045f07..cdb206cc 100644
--- a/src/Codeception/Module/Symfony.php
+++ b/src/Codeception/Module/Symfony.php
@@ -83,6 +83,8 @@
  * * debug: true - Turn on/off debug mode
  * * cache_router: 'false' - Enable router caching between tests in order to [increase performance](http://lakion.com/blog/how-did-we-speed-up-sylius-behat-suite-with-blackfire)
  * * rebootable_client: 'true' - Reboot client's kernel before each request
+ * * guard: 'false' - Enable custom authentication system with guard (only for 4.x and 5.x versions of the symfony)
+ * * authenticator: 'false' - Reboot client's kernel before each request (only for 6.x versions of the symfony)
  *
  * #### Example (`functional.suite.yml`) - Symfony 4 Directory Structure
  *
@@ -160,6 +162,7 @@ class Symfony extends Framework implements DoctrineProvider, PartedModule
         'cache_router' => false,
         'em_service' => 'doctrine.orm.entity_manager',
         'rebootable_client' => true,
+        'authenticator' => false,
         'guard' => false
     ];
 
diff --git a/src/Codeception/Module/Symfony/SessionAssertionsTrait.php b/src/Codeception/Module/Symfony/SessionAssertionsTrait.php
index 4c3bc192..73a440dc 100644
--- a/src/Codeception/Module/Symfony/SessionAssertionsTrait.php
+++ b/src/Codeception/Module/Symfony/SessionAssertionsTrait.php
@@ -10,6 +10,7 @@
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken;
+use Symfony\Component\Security\Http\Authenticator\Token\PostAuthenticationToken;
 use Symfony\Component\Security\Http\Logout\LogoutUrlGenerator;
 use function is_int;
 use function serialize;
@@ -37,12 +38,22 @@ public function amLoggedInAs(UserInterface $user, string $firewallName = 'main',
     {
         $session = $this->getCurrentSession();
 
-        if ($this->config['guard']) {
-            $token = new PostAuthenticationGuardToken($user, $firewallName, $user->getRoles());
+        if ($this->getSymfonyMajorVersion() < 6) {
+            if ($this->config['guard']) {
+                $token = new PostAuthenticationGuardToken($user, $firewallName, $user->getRoles());
+            } else {
+                $token = new UsernamePasswordToken($user, null, $firewallName, $user->getRoles());
+            }
         } else {
-            $token = new UsernamePasswordToken($user, null, $firewallName, $user->getRoles());
+            if ($this->config['authenticator']) {
+                $token = new PostAuthenticationToken($user, $firewallName, $user->getRoles());
+            } else {
+                $token = new UsernamePasswordToken($user, $firewallName, $user->getRoles());
+            }
         }
 
+        $this->getTokenStorage()->setToken($token);
+
         if ($firewallContext) {
             $session->set('_security_' . $firewallContext, serialize($token));
         } else {
@@ -199,6 +210,24 @@ protected function getLogoutUrlGenerator(): ?LogoutUrlGenerator
 
     protected function getCurrentSession(): SessionInterface
     {
-        return $this->grabService('session');
+        $container = $this->_getContainer();
+
+        if ($this->getSymfonyMajorVersion() < 6) {
+            return $container->get('session');
+        }
+
+        if ($container->has('session')) {
+            return $container->get('session');
+        }
+
+        $session = $container->get('session.factory')->createSession();
+        $container->set('session', $session);
+
+        return $session;
+    }
+
+    protected function getSymfonyMajorVersion(): int
+    {
+        return $this->kernel::MAJOR_VERSION;
     }
 }