diff --git a/features/app/src/EventListener/ForgotPasswordEventListener.php b/features/app/src/EventListener/ForgotPasswordEventListener.php
index d5f2cb8..7f61b36 100644
--- a/features/app/src/EventListener/ForgotPasswordEventListener.php
+++ b/features/app/src/EventListener/ForgotPasswordEventListener.php
@@ -15,6 +15,7 @@
 
 use App\Entity\User;
 use CoopTilleuls\ForgotPasswordBundle\Event\CreateTokenEvent;
+use CoopTilleuls\ForgotPasswordBundle\Event\ForgotPasswordEvent;
 use CoopTilleuls\ForgotPasswordBundle\Event\UpdatePasswordEvent;
 use Doctrine\Bundle\DoctrineBundle\Registry;
 use Doctrine\ORM\EntityManagerInterface;
@@ -56,6 +57,9 @@ public static function getSubscribedEvents()
         return [
             CreateTokenEvent::class => 'onCreateToken',
             UpdatePasswordEvent::class => 'onUpdatePassword',
+            // Symfony 4.3 and inferior
+            ForgotPasswordEvent::CREATE_TOKEN => 'onCreateToken',
+            ForgotPasswordEvent::UPDATE_PASSWORD => 'onUpdatePassword',
         ];
     }
 
diff --git a/src/Event/ForgotPasswordEvent.php b/src/Event/ForgotPasswordEvent.php
index b6614d5..e44bf0d 100644
--- a/src/Event/ForgotPasswordEvent.php
+++ b/src/Event/ForgotPasswordEvent.php
@@ -14,15 +14,17 @@
 namespace CoopTilleuls\ForgotPasswordBundle\Event;
 
 use CoopTilleuls\ForgotPasswordBundle\Entity\AbstractPasswordToken;
-use Symfony\Contracts\EventDispatcher\Event;
 
 /**
  * @author Vincent CHALAMON <vincent@les-tilleuls.coop>
  *
  * @deprecated Use CreateTokenEvent and UpdatePasswordEvent instead
  */
-class ForgotPasswordEvent extends Event
+class ForgotPasswordEvent extends PolyfillEvent
 {
+    public const CREATE_TOKEN = 'coop_tilleuls_forgot_password.create_token';
+    public const UPDATE_PASSWORD = 'coop_tilleuls_forgot_password.update_password';
+
     protected $passwordToken;
     protected $password;
 
diff --git a/src/Event/PolyfillEvent.php b/src/Event/PolyfillEvent.php
new file mode 100644
index 0000000..668668e
--- /dev/null
+++ b/src/Event/PolyfillEvent.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the CoopTilleulsForgotPasswordBundle package.
+ *
+ * (c) Vincent CHALAMON <vincent@les-tilleuls.coop>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace CoopTilleuls\ForgotPasswordBundle\Event;
+
+use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
+
+if (is_subclass_of(EventDispatcher::class, EventDispatcherInterface::class)) {
+    // Symfony 4.4 and upper
+    abstract class PolyfillEvent extends ContractsEvent
+    {
+    }
+} else {
+    // Symfony 4.3 and inferior
+    abstract class PolyfillEvent extends Event
+    {
+    }
+}
diff --git a/src/Manager/ForgotPasswordManager.php b/src/Manager/ForgotPasswordManager.php
index b629a74..ec55908 100644
--- a/src/Manager/ForgotPasswordManager.php
+++ b/src/Manager/ForgotPasswordManager.php
@@ -15,9 +15,11 @@
 
 use CoopTilleuls\ForgotPasswordBundle\Entity\AbstractPasswordToken;
 use CoopTilleuls\ForgotPasswordBundle\Event\CreateTokenEvent;
+use CoopTilleuls\ForgotPasswordBundle\Event\ForgotPasswordEvent;
 use CoopTilleuls\ForgotPasswordBundle\Event\UpdatePasswordEvent;
 use CoopTilleuls\ForgotPasswordBundle\Manager\Bridge\ManagerInterface;
-use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 
 /**
  * @author Vincent CHALAMON <vincent@les-tilleuls.coop>
@@ -63,7 +65,11 @@ public function resetPassword($propertyName, $value): void
         }
 
         // Generate password token
-        $this->dispatcher->dispatch(new CreateTokenEvent($token));
+        if ($this->dispatcher instanceof ContractsEventDispatcherInterface) {
+            $this->dispatcher->dispatch(new CreateTokenEvent($token));
+        } else {
+            $this->dispatcher->dispatch(ForgotPasswordEvent::CREATE_TOKEN, new CreateTokenEvent($token));
+        }
     }
 
     /**
@@ -74,7 +80,11 @@ public function resetPassword($propertyName, $value): void
     public function updatePassword(AbstractPasswordToken $passwordToken, $password)
     {
         // Update user password
-        $this->dispatcher->dispatch(new UpdatePasswordEvent($passwordToken, $password));
+        if ($this->dispatcher instanceof ContractsEventDispatcherInterface) {
+            $this->dispatcher->dispatch(new UpdatePasswordEvent($passwordToken, $password));
+        } else {
+            $this->dispatcher->dispatch(ForgotPasswordEvent::UPDATE_PASSWORD, new UpdatePasswordEvent($passwordToken, $password));
+        }
 
         // Remove PasswordToken
         $this->manager->remove($passwordToken);
diff --git a/tests/Manager/ForgotPasswordManagerTest.php b/tests/Manager/ForgotPasswordManagerTest.php
index b49b940..447283d 100644
--- a/tests/Manager/ForgotPasswordManagerTest.php
+++ b/tests/Manager/ForgotPasswordManagerTest.php
@@ -15,6 +15,7 @@
 
 use CoopTilleuls\ForgotPasswordBundle\Entity\AbstractPasswordToken;
 use CoopTilleuls\ForgotPasswordBundle\Event\CreateTokenEvent;
+use CoopTilleuls\ForgotPasswordBundle\Event\ForgotPasswordEvent;
 use CoopTilleuls\ForgotPasswordBundle\Event\UpdatePasswordEvent;
 use CoopTilleuls\ForgotPasswordBundle\Manager\Bridge\ManagerInterface;
 use CoopTilleuls\ForgotPasswordBundle\Manager\ForgotPasswordManager;
@@ -22,8 +23,9 @@
 use CoopTilleuls\ForgotPasswordBundle\Tests\ProphecyTrait;
 use PHPUnit\Framework\TestCase;
 use Prophecy\Argument;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
-use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 
 /**
  * @author Vincent CHALAMON <vincent@les-tilleuls.coop>
@@ -75,9 +77,15 @@ public function testResetPasswordWithNoPreviousToken(): void
         $this->managerMock->findOneBy('App\Entity\User', ['email' => 'foo@example.com'])->willReturn($this->userMock->reveal())->shouldBeCalledOnce();
         $this->passwordManagerMock->findOneByUser($this->userMock->reveal())->willReturn(null)->shouldBeCalledOnce();
         $this->passwordManagerMock->createPasswordToken($this->userMock->reveal())->willReturn($tokenMock->reveal())->shouldBeCalledOnce();
-        $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($tokenMock) {
-            return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
-        }))->shouldBeCalledOnce();
+        if ($this->eventDispatcherMock->reveal() instanceof ContractsEventDispatcherInterface) {
+            $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($tokenMock) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        } else {
+            $this->eventDispatcherMock->dispatch(ForgotPasswordEvent::CREATE_TOKEN, Argument::that(function ($event) use ($tokenMock) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        }
 
         $this->manager->resetPassword('email', 'foo@example.com');
     }
@@ -90,9 +98,15 @@ public function testResetPasswordWithExpiredPreviousToken(): void
         $this->passwordManagerMock->findOneByUser($this->userMock->reveal())->willReturn($this->tokenMock->reveal())->shouldBeCalledOnce();
         $this->tokenMock->isExpired()->willReturn(true)->shouldBeCalledOnce();
         $this->passwordManagerMock->createPasswordToken($this->userMock->reveal())->willReturn($tokenMock->reveal())->shouldBeCalledOnce();
-        $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($tokenMock) {
-            return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
-        }))->shouldBeCalledOnce();
+        if ($this->eventDispatcherMock->reveal() instanceof ContractsEventDispatcherInterface) {
+            $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($tokenMock) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        } else {
+            $this->eventDispatcherMock->dispatch(ForgotPasswordEvent::CREATE_TOKEN, Argument::that(function ($event) use ($tokenMock) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $tokenMock->reveal() === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        }
 
         $this->manager->resetPassword('email', 'foo@example.com');
     }
@@ -114,9 +128,15 @@ public function testResetPasswordWithUnexpiredTokenHttp(): void
         $this->managerMock->findOneBy('App\Entity\User', ['email' => 'foo@example.com'])->willReturn($this->userMock->reveal())->shouldBeCalledOnce();
         $this->passwordManagerMock->findOneByUser($this->userMock->reveal())->willReturn($token)->shouldBeCalledOnce();
 
-        $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($token) {
-            return $event instanceof CreateTokenEvent && null === $event->getPassword() && $token === $event->getPasswordToken();
-        }))->shouldBeCalledOnce();
+        if ($this->eventDispatcherMock->reveal() instanceof ContractsEventDispatcherInterface) {
+            $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($token) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $token === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        } else {
+            $this->eventDispatcherMock->dispatch(ForgotPasswordEvent::CREATE_TOKEN, Argument::that(function ($event) use ($token) {
+                return $event instanceof CreateTokenEvent && null === $event->getPassword() && $token === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        }
 
         $this->manager->resetPassword('email', 'foo@example.com');
     }
@@ -125,9 +145,15 @@ public function testUpdatePassword(): void
     {
         $token = $this->tokenMock->reveal();
 
-        $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($token) {
-            return $event instanceof UpdatePasswordEvent && 'bar' === $event->getPassword() && $token === $event->getPasswordToken();
-        }))->shouldBeCalledOnce();
+        if ($this->eventDispatcherMock->reveal() instanceof ContractsEventDispatcherInterface) {
+            $this->eventDispatcherMock->dispatch(Argument::that(function ($event) use ($token) {
+                return $event instanceof UpdatePasswordEvent && 'bar' === $event->getPassword() && $token === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        } else {
+            $this->eventDispatcherMock->dispatch(ForgotPasswordEvent::UPDATE_PASSWORD, Argument::that(function ($event) use ($token) {
+                return $event instanceof UpdatePasswordEvent && 'bar' === $event->getPassword() && $token === $event->getPasswordToken();
+            }))->shouldBeCalledOnce();
+        }
         $this->managerMock->remove($token)->shouldBeCalledOnce();
 
         $this->manager->updatePassword($token, 'bar');