diff --git a/.travis.yml b/.travis.yml
index 8ca6cae..5516a62 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,11 @@ matrix:
         - php: 7.4
           env:
             - COMPOSER_FLAGS='--prefer-lowest'
+        - php: 7.4
         - php: 8.0
         - php: 8.1
         - php: 8.2
+        - php: 8.3
 
 cache:
     directories:
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 037f644..90525f6 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -18,15 +18,10 @@ class Configuration implements ConfigurationInterface
 {
     private const SUPPORTED_DRIVERS = ['orm'];
 
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
-        if (true === method_exists(TreeBuilder::class, 'getRootNode')) {
-            $treeBuilder = new TreeBuilder('fsi_resource_repository');
-            $rootNode = $treeBuilder->getRootNode();
-        } else {
-            $treeBuilder = new TreeBuilder();
-            $rootNode = $treeBuilder->root('fsi_resource_repository');
-        }
+        $treeBuilder = new TreeBuilder('fsi_resource_repository');
+        $rootNode = $treeBuilder->getRootNode();
 
         $rootNode->children()
             ->scalarNode('db_driver')
diff --git a/Doctrine/ResourceRepository.php b/Doctrine/ResourceRepository.php
index 5d13148..ef6a445 100644
--- a/Doctrine/ResourceRepository.php
+++ b/Doctrine/ResourceRepository.php
@@ -23,7 +23,7 @@ class ResourceRepository extends EntityRepository implements ResourceValueReposi
      * @param null $lockVersion
      * @return ResourceValue
      */
-    public function find($id, $lockMode = null, $lockVersion = null)
+    public function find($id, $lockMode = null, $lockVersion = null): ResourceValue
     {
         if ($lockMode === null) {
             $lockMode = LockMode::NONE;
@@ -66,26 +66,26 @@ public function remove(ResourceValue $resourceValue): void
      * Unsupported method
      *
      * @param array $criteria
-     * @param array $orderBy
-     * @param null $limit
-     * @param null $offset
-     * @return array|void
+     * @param array|null $orderBy
+     * @param int|null $limit
+     * @param int|null $offset
+     * @return array
      * @throws EntityRepositoryException
      */
-    public function findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
+    public function findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null): array
     {
-        $this->throwBadMethodException('findBy');
+        throw $this->throwBadMethodException('findBy');
     }
 
     /**
      * Unsupported method
      *
-     * @return array|void
+     * @return array
      * @throws EntityRepositoryException
      */
-    public function findAll()
+    public function findAll(): array
     {
-        $this->throwBadMethodException('findAll');
+        throw $this->throwBadMethodException('findAll');
     }
 
     /**
@@ -93,21 +93,20 @@ public function findAll()
      *
      * @param array $criteria
      * @param array $orderBy
-     * @return object|void
+     * @return ResourceValue|null
      * @throws EntityRepositoryException
      */
-    public function findOneBy(array $criteria, array $orderBy = null)
+    public function findOneBy(array $criteria, array $orderBy = null): ?ResourceValue
     {
-        $this->throwBadMethodException('findOneBy');
+        throw $this->throwBadMethodException('findOneBy');
     }
 
     /**
      * @param string $method
-     * @throws EntityRepositoryException
      */
-    private function throwBadMethodException(string $method): void
+    private function throwBadMethodException(string $method): EntityRepositoryException
     {
-        throw new EntityRepositoryException(sprintf(
+        return new EntityRepositoryException(sprintf(
             'Method "%s" is not supported in "%s" entity repository',
             $method,
             $this->getEntityName()
diff --git a/composer.json b/composer.json
index 295371a..99253d7 100644
--- a/composer.json
+++ b/composer.json
@@ -32,10 +32,10 @@
         "twig/twig": "^3.7"
     },
     "require-dev": {
-        "doctrine/orm": "^2.5",
+        "doctrine/orm": "^2.5|^3.0",
         "friendsofsymfony/ckeditor-bundle": "^2.1",
-        "fsi/files": "^2.0.4",
-        "fsi/form-extensions-bundle": "^2.2",
+        "fsi/files": "^2.0.4@dev",
+        "fsi/form-extensions-bundle": "^2.2@dev",
         "phpunit/phpunit": "^9.5|^10.0",
         "phpspec/phpspec": "^7.4",
         "phpstan/phpstan": "^1.10",
diff --git a/spec/FSi/Bundle/ResourceRepositoryBundle/Repository/RepositorySpec.php b/spec/FSi/Bundle/ResourceRepositoryBundle/Repository/RepositorySpec.php
index bd91acd..4d885a0 100644
--- a/spec/FSi/Bundle/ResourceRepositoryBundle/Repository/RepositorySpec.php
+++ b/spec/FSi/Bundle/ResourceRepositoryBundle/Repository/RepositorySpec.php
@@ -11,7 +11,10 @@
 
 namespace spec\FSi\Bundle\ResourceRepositoryBundle\Repository;
 
+use Doctrine\ORM\EntityRepository;
+use Doctrine\Persistence\ObjectRepository;
 use FSi\Bundle\ResourceRepositoryBundle\Doctrine\ResourceRepository;
+use FSi\Bundle\ResourceRepositoryBundle\Model\ResourceValueRepository;
 use FSi\Bundle\ResourceRepositoryBundle\Repository\MapBuilder;
 use FSi\Bundle\ResourceRepositoryBundle\Repository\Repository;
 use FSi\Bundle\ResourceRepositoryBundle\Repository\Resource\Type\TextType;
@@ -21,7 +24,7 @@
 
 class RepositorySpec extends ObjectBehavior
 {
-    public function let(MapBuilder $builder, ResourceRepository $repository): void
+    public function let(MapBuilder $builder, ResourceValueRepository $repository): void
     {
         $this->beConstructedWith($builder, $repository, Resource::class);
     }
@@ -39,7 +42,7 @@ public function it_return_null_if_resource_entity_does_not_exist(MapBuilder $bui
 
     public function it_return_null_if_entity_field_is_null(
         MapBuilder $builder,
-        ResourceRepository $repository,
+        ResourceValueRepository $repository,
         TextType $resource,
         Resource $entity
     ): void {
@@ -54,7 +57,7 @@ public function it_return_null_if_entity_field_is_null(
 
     public function it_return_null_if_entity_field_is_empty_string(
         MapBuilder $builder,
-        ResourceRepository $repository,
+        ResourceValueRepository $repository,
         TextType $resource,
         Resource $entity
     ): void {
@@ -69,7 +72,7 @@ public function it_return_null_if_entity_field_is_empty_string(
 
     public function it_return_0_if_entity_field_is_zero(
         MapBuilder $builder,
-        ResourceRepository $repository,
+        ResourceValueRepository $repository,
         TextType $resource,
         Resource $entity
     ): void {
@@ -84,7 +87,7 @@ public function it_return_0_if_entity_field_is_zero(
 
     public function it_sets_entity_field_on_existing_value(
         MapBuilder $builder,
-        ResourceRepository $repository,
+        ResourceValueRepository $repository,
         TextType $resource,
         Resource $entity
     ): void {
@@ -99,7 +102,7 @@ public function it_sets_entity_field_on_existing_value(
 
     public function it_removes_entity_when_setting_empty_value(
         MapBuilder $builder,
-        ResourceRepository $repository,
+        ResourceValueRepository $repository,
         TextType $resource,
         Resource $entity
     ): void {