diff --git a/Security/Guard/JWTTokenAuthenticator.php b/Security/Guard/JWTTokenAuthenticator.php
index 43d87a38..2f51983c 100644
--- a/Security/Guard/JWTTokenAuthenticator.php
+++ b/Security/Guard/JWTTokenAuthenticator.php
@@ -20,6 +20,7 @@
 use Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface;
 use Lexik\Bundle\JWTAuthenticationBundle\TokenExtractor\TokenExtractorInterface;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
@@ -171,10 +172,16 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
 
         if ($authException instanceof ExpiredTokenException) {
             $event = new JWTExpiredEvent($authException, $response);
-            $this->dispatcher->dispatch(Events::JWT_EXPIRED, $event);
+            $eventName = Events::JWT_EXPIRED;
         } else {
             $event = new JWTInvalidEvent($authException, $response);
-            $this->dispatcher->dispatch(Events::JWT_INVALID, $event);
+            $eventName = Events::JWT_INVALID;
+        }
+
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($event, $eventName);
+        } else {
+            $this->dispatcher->dispatch($eventName, $event);
         }
 
         return $event->getResponse();
@@ -198,7 +205,11 @@ public function start(Request $request, AuthenticationException $authException =
         $exception = new MissingTokenException('JWT Token not found', 0, $authException);
         $event     = new JWTNotFoundEvent($exception, new JWTAuthenticationFailureResponse($exception->getMessageKey()));
 
-        $this->dispatcher->dispatch(Events::JWT_NOT_FOUND, $event);
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($event, Events::JWT_NOT_FOUND);
+        } else {
+            $this->dispatcher->dispatch(Events::JWT_NOT_FOUND, $event);
+        }
 
         return $event->getResponse();
     }
@@ -226,7 +237,12 @@ public function createAuthenticatedToken(UserInterface $user, $providerKey)
 
         $authToken = new JWTUserToken($user->getRoles(), $user, $preAuthToken->getCredentials(), $providerKey);
 
-        $this->dispatcher->dispatch(Events::JWT_AUTHENTICATED, new JWTAuthenticatedEvent($preAuthToken->getPayload(), $authToken));
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch(new JWTAuthenticatedEvent($preAuthToken->getPayload(), $authToken), Events::JWT_AUTHENTICATED);
+        } else {
+            $this->dispatcher->dispatch(Events::JWT_AUTHENTICATED, new JWTAuthenticatedEvent($preAuthToken->getPayload(), $authToken));
+        }
+
         $this->preAuthenticationTokenStorage->setToken(null);
 
         return $authToken;
diff --git a/Security/Http/Authentication/AuthenticationFailureHandler.php b/Security/Http/Authentication/AuthenticationFailureHandler.php
index 0c8c6922..f8fd180d 100644
--- a/Security/Http/Authentication/AuthenticationFailureHandler.php
+++ b/Security/Http/Authentication/AuthenticationFailureHandler.php
@@ -6,6 +6,7 @@
 use Lexik\Bundle\JWTAuthenticationBundle\Events;
 use Lexik\Bundle\JWTAuthenticationBundle\Response\JWTAuthenticationFailureResponse;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\Authentication\AuthenticationFailureHandlerInterface;
@@ -37,7 +38,11 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
     {
         $event = new AuthenticationFailureEvent($exception, new JWTAuthenticationFailureResponse());
 
-        $this->dispatcher->dispatch(Events::AUTHENTICATION_FAILURE, $event);
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($event, Events::AUTHENTICATION_FAILURE);
+        } else {
+            $this->dispatcher->dispatch(Events::AUTHENTICATION_FAILURE, $event);
+        }
 
         return $event->getResponse();
     }
diff --git a/Security/Http/Authentication/AuthenticationSuccessHandler.php b/Security/Http/Authentication/AuthenticationSuccessHandler.php
index b9b06d6c..489e6a86 100644
--- a/Security/Http/Authentication/AuthenticationSuccessHandler.php
+++ b/Security/Http/Authentication/AuthenticationSuccessHandler.php
@@ -7,6 +7,7 @@
 use Lexik\Bundle\JWTAuthenticationBundle\Response\JWTAuthenticationSuccessResponse;
 use Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
@@ -45,7 +46,12 @@ public function handleAuthenticationSuccess(UserInterface $user, $jwt = null)
         $response = new JWTAuthenticationSuccessResponse($jwt);
         $event    = new AuthenticationSuccessEvent(['token' => $jwt], $user, $response);
 
-        $this->dispatcher->dispatch(Events::AUTHENTICATION_SUCCESS, $event);
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($event, Events::AUTHENTICATION_SUCCESS);
+        } else {
+            $this->dispatcher->dispatch(Events::AUTHENTICATION_SUCCESS, $event);
+        }
+
         $response->setData($event->getData());
 
         return $response;
diff --git a/Services/JWTManager.php b/Services/JWTManager.php
index 47b010e5..6d56c425 100644
--- a/Services/JWTManager.php
+++ b/Services/JWTManager.php
@@ -9,6 +9,7 @@
 use Lexik\Bundle\JWTAuthenticationBundle\Event\JWTEncodedEvent;
 use Lexik\Bundle\JWTAuthenticationBundle\Events;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 use Symfony\Component\PropertyAccess\PropertyAccess;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
@@ -63,7 +64,12 @@ public function create(UserInterface $user)
         $this->addUserIdentityToPayload($user, $payload);
 
         $jwtCreatedEvent = new JWTCreatedEvent($payload, $user);
-        $this->dispatcher->dispatch(Events::JWT_CREATED, $jwtCreatedEvent);
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($jwtCreatedEvent, Events::JWT_CREATED);
+        } else {
+            $this->dispatcher->dispatch(Events::JWT_CREATED, $jwtCreatedEvent);
+
+        }
 
         if ($this->jwtEncoder instanceof HeaderAwareJWTEncoderInterface) {
             $jwtString = $this->jwtEncoder->encode($jwtCreatedEvent->getData(), $jwtCreatedEvent->getHeader());
@@ -72,7 +78,12 @@ public function create(UserInterface $user)
         }
 
         $jwtEncodedEvent = new JWTEncodedEvent($jwtString);
-        $this->dispatcher->dispatch(Events::JWT_ENCODED, $jwtEncodedEvent);
+
+        if (interface_exists(ContractsEventDispatcherInterface::class, false)) {
+            $this->dispatcher->dispatch($jwtEncodedEvent, Events::JWT_ENCODED);
+        } else {
+            $this->dispatcher->dispatch(Events::JWT_ENCODED, $jwtEncodedEvent);
+        }
 
         return $jwtString;
     }
@@ -87,8 +98,11 @@ public function decode(TokenInterface $token)
         }
 
         $event = new JWTDecodedEvent($payload);
-
-        $this->dispatcher->dispatch(Events::JWT_DECODED, $event);
+        if (interface_exists(ContractsEventDispatcherInterface::class)) {
+            $this->dispatcher->dispatch($event, Events::JWT_DECODED);
+        } else {
+            $this->dispatcher->dispatch(Events::JWT_DECODED, $event);
+        }
 
         if (!$event->isValid()) {
             return false;