diff --git a/composer.json b/composer.json
index 1c32169..d5b751b 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,6 @@
     },
     "suggest": {
         "illuminate/events": "Required to use Laravel Dispatcher as form Event Dispatcher (^8.0).",
-        "illuminate/validation": "Required to use step data validation on Before Handle Step event (^8.0).",
         "illuminate/view": "Required to render Laravel views (^8.0).",
         "illuminate/session": "Required to use Laravel Session as Stepped Form storage (^8.0).",
         "illuminate/config": "Required to use Laravel config (^8.0)."
diff --git a/src/Entity/RulesDefinition.php b/src/Entity/RulesDefinition.php
deleted file mode 100644
index 4584475..0000000
--- a/src/Entity/RulesDefinition.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Entity;
-
-class RulesDefinition
-{
-    public function __construct(
-        /**
-         * @var array<string, mixed>
-         */
-        private array $rules,
-        /**
-         * @var array<string, string>
-         */
-        private array $messages = [],
-        /**
-         * @var array<string, string>
-         */
-        private array $customAttributes = [],
-    ) {
-    }
-
-    /**
-     * @return array<string, mixed>
-     */
-    public function getRules(): array
-    {
-        return $this->rules;
-    }
-
-    /**
-     * @return array<string, string>
-     */
-    public function getMessages(): array
-    {
-        return $this->messages;
-    }
-
-    /**
-     * @return array<string, string>
-     */
-    public function getCustomAttributes(): array
-    {
-        return $this->customAttributes;
-    }
-}
diff --git a/src/Event/Listener/BeforeHandleStepListener.php b/src/Event/Listener/BeforeHandleStepListener.php
deleted file mode 100644
index aa106b3..0000000
--- a/src/Event/Listener/BeforeHandleStepListener.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Event\Listener;
-
-use Lexal\LaravelSteppedForm\Steps\ValidateStepInterface;
-use Lexal\LaravelSteppedForm\Validator\Exception\ValidatorException;
-use Lexal\LaravelSteppedForm\Validator\ValidatorInterface;
-use Lexal\SteppedForm\EventDispatcher\Event\BeforeHandleStep;
-
-use function is_array;
-
-class BeforeHandleStepListener
-{
-    public function __construct(private ValidatorInterface $validator)
-    {
-    }
-
-    /**
-     * @throws ValidatorException
-     */
-    public function handle(BeforeHandleStep $event): void
-    {
-        $step = $event->getStep()->getStep();
-
-        if ($step instanceof ValidateStepInterface && is_array($event->getData())) {
-            $this->validator->validate($event->getData(), $step->getRulesDefinition($event->getEntity()));
-        }
-    }
-}
diff --git a/src/ServiceProvider/ServiceProvider.php b/src/ServiceProvider/ServiceProvider.php
index c735fd8..4ca5751 100644
--- a/src/ServiceProvider/ServiceProvider.php
+++ b/src/ServiceProvider/ServiceProvider.php
@@ -7,7 +7,6 @@
 use Illuminate\Contracts\Config\Repository;
 use Illuminate\Contracts\Container\BindingResolutionException;
 use Illuminate\Contracts\Events\Dispatcher;
-use Illuminate\Contracts\Validation\Factory as ValidationFactory;
 use Illuminate\Contracts\View\Factory as ViewFactory;
 use Illuminate\Support\ServiceProvider as LaravelServiceProvider;
 use Lexal\HttpSteppedForm\ExceptionNormalizer\ExceptionNormalizer;
@@ -15,11 +14,8 @@
 use Lexal\HttpSteppedForm\Renderer\RendererInterface;
 use Lexal\HttpSteppedForm\Routing\RedirectorInterface;
 use Lexal\LaravelSteppedForm\Event\Dispatcher\EventDispatcher;
-use Lexal\LaravelSteppedForm\Event\Listener\BeforeHandleStepListener;
 use Lexal\LaravelSteppedForm\Renderer\Renderer;
 use Lexal\LaravelSteppedForm\Routing\Redirector;
-use Lexal\LaravelSteppedForm\Validator\Validator;
-use Lexal\LaravelSteppedForm\Validator\ValidatorInterface;
 use Lexal\SteppedForm\Data\FormDataStorage;
 use Lexal\SteppedForm\Data\FormDataStorageInterface;
 use Lexal\SteppedForm\Data\StepControl;
@@ -27,7 +23,6 @@
 use Lexal\SteppedForm\Data\Storage\StorageInterface;
 use Lexal\SteppedForm\EntityCopy\EntityCopyInterface;
 use Lexal\SteppedForm\EntityCopy\SimpleEntityCopy;
-use Lexal\SteppedForm\EventDispatcher\Event\BeforeHandleStep;
 use Lexal\SteppedForm\EventDispatcher\EventDispatcherInterface;
 use Lexal\SteppedForm\State\FormState;
 use Lexal\SteppedForm\State\FormStateInterface;
@@ -46,10 +41,6 @@ class ServiceProvider extends LaravelServiceProvider
 {
     private const CONFIG_FILENAME = 'stepped-form.php';
 
-    /**
-     * @throws ContainerExceptionInterface
-     * @throws NotFoundExceptionInterface
-     */
     public function boot(): void
     {
         $path = dirname(__DIR__, 2) . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . self::CONFIG_FILENAME;
@@ -59,13 +50,6 @@ public function boot(): void
         ]);
 
         $this->mergeConfigFrom($path, 'stepped-form');
-
-        if ($this->app->bound(Dispatcher::class) && $this->app->bound(ValidationFactory::class)) {
-            /** @var Dispatcher $dispatcher */
-            $dispatcher = $this->app->get(Dispatcher::class);
-
-            $dispatcher->listen(BeforeHandleStep::class, [BeforeHandleStepListener::class, 'handle']);
-        }
     }
 
     public function register(): void
@@ -86,7 +70,6 @@ public function register(): void
         $this->registerFormState();
         $this->registerStepsBuilder();
         $this->registerEventDispatcher();
-        $this->registerValidator();
         $this->registerEntityCopy();
     }
 
@@ -141,11 +124,6 @@ private function registerEventDispatcher(): void
         }
     }
 
-    private function registerValidator(): void
-    {
-        $this->app->singleton(ValidatorInterface::class, Validator::class);
-    }
-
     private function registerEntityCopy(): void
     {
         $this->app->singleton(EntityCopyInterface::class, SimpleEntityCopy::class);
diff --git a/src/Steps/ValidateStepInterface.php b/src/Steps/ValidateStepInterface.php
deleted file mode 100644
index ee8aace..0000000
--- a/src/Steps/ValidateStepInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Steps;
-
-use Lexal\LaravelSteppedForm\Entity\RulesDefinition;
-
-interface ValidateStepInterface
-{
-    /**
-     * Returns Laravel validation rules that the validator will use to validate data.
-     */
-    public function getRulesDefinition(mixed $entity): RulesDefinition;
-}
diff --git a/src/Validator/Exception/ValidatorException.php b/src/Validator/Exception/ValidatorException.php
deleted file mode 100644
index ff4ccf3..0000000
--- a/src/Validator/Exception/ValidatorException.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Validator\Exception;
-
-use Lexal\SteppedForm\Exception\SteppedFormErrorsException;
-
-class ValidatorException extends SteppedFormErrorsException
-{
-}
diff --git a/src/Validator/Validator.php b/src/Validator/Validator.php
deleted file mode 100644
index 78940e0..0000000
--- a/src/Validator/Validator.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Validator;
-
-use Illuminate\Contracts\Validation\Factory as ValidationFactory;
-use Lexal\LaravelSteppedForm\Entity\RulesDefinition;
-use Lexal\LaravelSteppedForm\Validator\Exception\ValidatorException;
-
-class Validator implements ValidatorInterface
-{
-    public function __construct(private ValidationFactory $validatorFactory)
-    {
-    }
-
-    public function validate(array $data, RulesDefinition $definition): void
-    {
-        $validator = $this->validatorFactory->make(
-            $data,
-            $definition->getRules(),
-            $definition->getMessages(),
-            $definition->getCustomAttributes(),
-        );
-
-        if ($validator->fails()) {
-            throw new ValidatorException($validator->errors()->messages());
-        }
-    }
-}
diff --git a/src/Validator/ValidatorInterface.php b/src/Validator/ValidatorInterface.php
deleted file mode 100644
index 0107ec7..0000000
--- a/src/Validator/ValidatorInterface.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Validator;
-
-use Lexal\LaravelSteppedForm\Entity\RulesDefinition;
-use Lexal\LaravelSteppedForm\Validator\Exception\ValidatorException;
-
-interface ValidatorInterface
-{
-    /**
-     * Validates step data.
-     *
-     * @param array<int|string, mixed> $data
-     *
-     * @throws ValidatorException
-     */
-    public function validate(array $data, RulesDefinition $definition): void;
-}
diff --git a/tests/Event/Listener/BeforeHandleStepListenerTest.php b/tests/Event/Listener/BeforeHandleStepListenerTest.php
deleted file mode 100644
index 2619545..0000000
--- a/tests/Event/Listener/BeforeHandleStepListenerTest.php
+++ /dev/null
@@ -1,101 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Tests\Event\Listener;
-
-use Illuminate\Contracts\Validation\Factory;
-use Illuminate\Contracts\Validation\Validator;
-use Illuminate\Support\MessageBag;
-use Lexal\LaravelSteppedForm\Entity\RulesDefinition;
-use Lexal\LaravelSteppedForm\Event\Listener\BeforeHandleStepListener;
-use Lexal\LaravelSteppedForm\Steps\ValidateStepInterface;
-use Lexal\LaravelSteppedForm\Validator\Exception\ValidatorException;
-use Lexal\LaravelSteppedForm\Validator\ValidatorInterface;
-use Lexal\SteppedForm\EventDispatcher\Event\BeforeHandleStep;
-use Lexal\SteppedForm\Exception\EventDispatcherException;
-use Lexal\SteppedForm\Steps\Collection\Step;
-use Lexal\SteppedForm\Steps\StepInterface;
-use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
-
-class BeforeHandleStepListenerTest extends TestCase
-{
-    private MockObject $validator;
-    private BeforeHandleStepListener $listener;
-
-    public function testHandle(): void
-    {
-        $this->validator->expects($this->once())
-            ->method('validate')
-            ->with(['data' => 'test'], new RulesDefinition(['data' => 'required'], ['data' => 'test message']));
-
-        $step = $this->createMock(ValidatableStepInterface::class);
-
-        $step->expects($this->once())
-            ->method('getRulesDefinition')
-            ->with(['entity'])
-            ->willReturn(new RulesDefinition(['data' => 'required'], ['data' => 'test message']));
-
-        $event = new BeforeHandleStep(['data' => 'test'], ['entity'], new Step('key', $step));
-
-        $this->listener->handle($event);
-    }
-
-    public function testHandleWithErrors(): void
-    {
-        $this->expectExceptionObject(new ValidatorException(['data' => 'required message']));
-
-        $this->validator->expects($this->once())
-            ->method('validate')
-            ->with(['data' => 'test'], new RulesDefinition(['data' => 'required']))
-            ->willThrowException(new ValidatorException(['data' => 'required message']));
-
-        $step = $this->createMock(ValidatableStepInterface::class);
-
-        $step->expects($this->once())
-            ->method('getRulesDefinition')
-            ->with(['entity'])
-            ->willReturn(new RulesDefinition(['data' => 'required']));
-
-        $event = new BeforeHandleStep(['data' => 'test'], ['entity'], new Step('key', $step));
-
-        $this->listener->handle($event);
-    }
-
-    public function testHandleDataIsNorArray(): void
-    {
-        $this->validator->expects($this->never())
-            ->method('validate');
-
-        $step = $this->createMock(ValidatableStepInterface::class);
-
-        $step->expects($this->never())
-            ->method('getRulesDefinition');
-
-        $event = new BeforeHandleStep('data', ['entity'], new Step('key', $step));
-
-        $this->listener->handle($event);
-    }
-
-    public function testHandleStepIsNotValidatable(): void
-    {
-        $this->validator->expects($this->never())
-            ->method('validate');
-
-        $step = $this->createMock(StepInterface::class);
-
-        $event = new BeforeHandleStep(['data' => 'test'], ['entity'], new Step('key', $step));
-
-        $this->listener->handle($event);
-    }
-
-    protected function setUp(): void
-    {
-        $this->validator = $this->createMock(ValidatorInterface::class);
-
-        $this->listener = new BeforeHandleStepListener($this->validator);
-
-        parent::setUp();
-    }
-}
diff --git a/tests/Event/Listener/ValidatableStepInterface.php b/tests/Event/Listener/ValidatableStepInterface.php
deleted file mode 100644
index e2e5c0e..0000000
--- a/tests/Event/Listener/ValidatableStepInterface.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Tests\Event\Listener;
-
-use Lexal\LaravelSteppedForm\Steps\ValidateStepInterface;
-use Lexal\SteppedForm\Steps\StepInterface;
-
-interface ValidatableStepInterface extends StepInterface, ValidateStepInterface
-{
-}
diff --git a/tests/Validator/ValidatorTest.php b/tests/Validator/ValidatorTest.php
deleted file mode 100644
index 36ca9b4..0000000
--- a/tests/Validator/ValidatorTest.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Lexal\LaravelSteppedForm\Tests\Validator;
-
-use Illuminate\Contracts\Validation\Factory as ValidationFactory;
-use Illuminate\Contracts\Validation\Validator as LaravelValidator;
-use Illuminate\Support\MessageBag;
-use Lexal\LaravelSteppedForm\Entity\RulesDefinition;
-use Lexal\LaravelSteppedForm\Validator\Exception\ValidatorException;
-use Lexal\LaravelSteppedForm\Validator\Validator;
-use Lexal\LaravelSteppedForm\Validator\ValidatorInterface;
-use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
-
-class ValidatorTest extends TestCase
-{
-    private MockObject $validatorFactory;
-    private ValidatorInterface $validator;
-
-    public function testValidate(): void
-    {
-        $validator = $this->createMock(LaravelValidator::class);
-
-        $validator->expects($this->once())
-            ->method('fails')
-            ->willReturn(false);
-
-        $this->validatorFactory->expects($this->once())
-            ->method('make')
-            ->with(['data' => 'test'], ['data' => 'required'], [], [])
-            ->willReturn($validator);
-
-        $this->validator->validate(['data' => 'test'], new RulesDefinition(['data' => 'required']));
-    }
-
-    public function testValidateWithException(): void
-    {
-        /** @phpstan-ignore-next-line */
-        $this->expectExceptionObject(new ValidatorException(['data' => ['required message']]));
-
-        $validator = $this->createMock(LaravelValidator::class);
-
-        $validator->expects($this->once())
-            ->method('fails')
-            ->willReturn(true);
-
-        $validator->expects($this->once())
-            ->method('errors')
-            ->willReturn(new MessageBag(['data' => 'required message']));
-
-        $this->validatorFactory->expects($this->once())
-            ->method('make')
-            ->with(['data' => 'test'], ['data' => 'required'], ['data' => 'test message'], [])
-            ->willReturn($validator);
-
-        $this->validator->validate(
-            ['data' => 'test'],
-            new RulesDefinition(['data' => 'required'], ['data' => 'test message']),
-        );
-    }
-
-    protected function setUp(): void
-    {
-        $this->validatorFactory = $this->createMock(ValidationFactory::class);
-
-        $this->validator = new Validator($this->validatorFactory);
-
-        parent::setUp();
-    }
-}