diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 08c242f..2020442 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2
@@ -36,7 +36,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: vendor
           key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}-${{ matrix.prefer }}-
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 653d6a7..d1932ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,8 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Deprecated
+- mark classes in namespace FreeElephants\JsonApiToolkit\DTO are deprecated 
+
 ### Changed
 - Add conflict with origin neomerx/json-api (use fork laravel-json-api/neomerx-json-api for best php 8.* support)
+- Use DTO from free-elephants/json-api-dto
 
 ## [0.0.15] - 2025-02-06
 
diff --git a/composer.json b/composer.json
index f35744c..96c0181 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,7 @@
         "doctrine/persistence": "^2.0|^3.0",
         "fig/http-message-util": "^1.0",
         "free-elephants/i18n": "^0.0.1",
+        "free-elephants/json-api-dto": "^0.0.1",
         "laminas/laminas-stratigility": "^3.2",
         "laravel-json-api/neomerx-json-api": "^5.0.2",
         "league/openapi-psr7-validator": "0.19 - 0.22",
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/AbstractAttributes.php b/src/FreeElephants/JsonApiToolkit/DTO/AbstractAttributes.php
index 4021bf4..bb5b1b0 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/AbstractAttributes.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/AbstractAttributes.php
@@ -2,6 +2,10 @@
 
 namespace FreeElephants\JsonApiToolkit\DTO;
 
-abstract class AbstractAttributes extends BaseKeyValueStructure
+/**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\AbstractAttributes
+ */
+abstract class AbstractAttributes extends \FreeElephants\JsonApi\DTO\AbstractAttributes
 {
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/AbstractDocument.php b/src/FreeElephants/JsonApiToolkit/DTO/AbstractDocument.php
index f3275cc..fe00e08 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/AbstractDocument.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/AbstractDocument.php
@@ -5,30 +5,10 @@
 use Psr\Http\Message\MessageInterface;
 
 /**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\AbstractDocument
  * @property AbstractResourceObject|mixed $data
  */
-abstract class AbstractDocument
+abstract class AbstractDocument extends \FreeElephants\JsonApi\DTO\AbstractDocument
 {
-    final public function __construct(array $data)
-    {
-        $concreteClass = new \ReflectionClass($this);
-        $dataProperty = $concreteClass->getProperty('data');
-        /** @var \ReflectionNamedType $reflectionType */
-        $reflectionType = $dataProperty->getType();
-        $dataClassName = $reflectionType->getName();
-        $this->data = new $dataClassName($data['data']);
-    }
-
-    /**
-     * @param MessageInterface $httpMessage
-     * @return static
-     */
-    public static function fromHttpMessage(MessageInterface $httpMessage): self
-    {
-        $httpMessage->getBody()->rewind();
-        $rawJson = $httpMessage->getBody()->getContents();
-        $decodedJson = json_decode($rawJson, true);
-
-        return new static($decodedJson);
-    }
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/AbstractRelationships.php b/src/FreeElephants/JsonApiToolkit/DTO/AbstractRelationships.php
index 354596b..ef1324f 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/AbstractRelationships.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/AbstractRelationships.php
@@ -2,12 +2,10 @@
 
 namespace FreeElephants\JsonApiToolkit\DTO;
 
-abstract class AbstractRelationships
+/**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\AbstractRelationships
+ */
+abstract class AbstractRelationships extends \FreeElephants\JsonApi\DTO\AbstractRelationships
 {
-    public function __construct(array $data)
-    {
-        foreach ($data as $relationshipName => $relationshipsData) {
-            $this->{$relationshipName} = new RelationshipToOne($relationshipsData);
-        }
-    }
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/AbstractResourceObject.php b/src/FreeElephants/JsonApiToolkit/DTO/AbstractResourceObject.php
index 76b5c15..18c8d1f 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/AbstractResourceObject.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/AbstractResourceObject.php
@@ -5,42 +5,10 @@
 use FreeElephants\JsonApiToolkit\DTO\Reflection\SuitableRelationshipsTypeDetector;
 
 /**
- * @property AbstractAttributes $attributes
- * @property AbstractRelationships $relationships
+ *
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\AbstractResourceObject
  */
-class AbstractResourceObject
+class AbstractResourceObject extends \FreeElephants\JsonApi\DTO\AbstractResourceObject
 {
-    public string $id;
-    public string $type;
-
-    public function __construct(array $data)
-    {
-        $this->id = $data['id'];
-        $this->type = $data['type'];
-
-        $concreteClass = new \ReflectionClass($this);
-
-        if (property_exists($this, 'attributes')) {
-            $attributesProperty = $concreteClass->getProperty('attributes');
-            $attributesClass = $attributesProperty->getType()->getName();
-            $this->attributes = new $attributesClass($data['attributes']);
-        }
-
-        if (property_exists($this, 'relationships')) {
-            $relationshipsData = $data['relationships'];
-            $concreteClass = new \ReflectionClass($this);
-            $relationshipsProperty = $concreteClass->getProperty('relationships');
-            $reflectionType = $relationshipsProperty->getType();
-
-            // handle php 8 union types
-            if ($reflectionType instanceof \ReflectionUnionType) {
-                $relationshipsClass = (new SuitableRelationshipsTypeDetector())->detect($reflectionType, $relationshipsData);
-            } else {
-                $relationshipsClass = $reflectionType->getName();
-            }
-
-            $relationshipsDto = new $relationshipsClass($relationshipsData);
-            $this->relationships = $relationshipsDto;
-        }
-    }
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/BaseKeyValueStructure.php b/src/FreeElephants/JsonApiToolkit/DTO/BaseKeyValueStructure.php
index 5c6c17d..4d83dd2 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/BaseKeyValueStructure.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/BaseKeyValueStructure.php
@@ -2,21 +2,10 @@
 
 namespace FreeElephants\JsonApiToolkit\DTO;
 
-class BaseKeyValueStructure
+/**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\BaseKeyValueStructure
+ */
+class BaseKeyValueStructure extends \FreeElephants\JsonApi\DTO\BaseKeyValueStructure
 {
-    public function __construct(array $attributes)
-    {
-        $concreteClass = new \ReflectionClass($this);
-        foreach ($attributes as $name => $value) {
-            $property = $concreteClass->getProperty($name);
-            if ($property->hasType()) {
-                $propertyType = $property->getType();
-                if ($propertyType instanceof \ReflectionNamedType && !$propertyType->isBuiltin()) {
-                    $propertyClassName = $propertyType->getName();
-                    $value = new $propertyClassName($value);
-                }
-            }
-            $this->{$name} = $value;
-        }
-    }
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/RelationshipToOne.php b/src/FreeElephants/JsonApiToolkit/DTO/RelationshipToOne.php
index 1ddc2b3..a78d870 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/RelationshipToOne.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/RelationshipToOne.php
@@ -2,7 +2,10 @@
 
 namespace FreeElephants\JsonApiToolkit\DTO;
 
-class RelationshipToOne extends AbstractDocument
+/**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\RelationshipToOne
+ */
+class RelationshipToOne extends \FreeElephants\JsonApi\DTO\RelationshipToOne
 {
-    public ResourceIdentifierObject $data;
 }
diff --git a/src/FreeElephants/JsonApiToolkit/DTO/ResourceIdentifierObject.php b/src/FreeElephants/JsonApiToolkit/DTO/ResourceIdentifierObject.php
index f58aa7e..b60be1a 100644
--- a/src/FreeElephants/JsonApiToolkit/DTO/ResourceIdentifierObject.php
+++ b/src/FreeElephants/JsonApiToolkit/DTO/ResourceIdentifierObject.php
@@ -2,14 +2,10 @@
 
 namespace FreeElephants\JsonApiToolkit\DTO;
 
-class ResourceIdentifierObject
+/**
+ * @deprecated
+ * @see \FreeElephants\JsonApi\DTO\ResourceIdentifierObject
+ */
+class ResourceIdentifierObject extends \FreeElephants\JsonApi\DTO\ResourceIdentifierObject
 {
-    public string $id;
-    public string $type;
-
-    public function __construct(array $data)
-    {
-        $this->id = $data['id'];
-        $this->type = $data['type'];
-    }
 }
diff --git a/tests/FreeElephants/JsonApiToolkit/DTO/DocumentTest.php b/tests/FreeElephants/JsonApiToolkit/DTO/DocumentTest.php
index 6ac771c..a0a2e26 100644
--- a/tests/FreeElephants/JsonApiToolkit/DTO/DocumentTest.php
+++ b/tests/FreeElephants/JsonApiToolkit/DTO/DocumentTest.php
@@ -70,7 +70,7 @@ class FooAttributes extends AbstractAttributes
 
 class FooRelationships extends AbstractRelationships
 {
-    public RelationshipToOne $baz;
+    public \FreeElephants\JsonApi\DTO\RelationshipToOne $baz;
 }
 
 class Nested extends BaseKeyValueStructure
diff --git a/tests/FreeElephants/JsonApiToolkit/DTO/Example/OneRelationships.php b/tests/FreeElephants/JsonApiToolkit/DTO/Example/OneRelationships.php
index b62c848..4ad123b 100644
--- a/tests/FreeElephants/JsonApiToolkit/DTO/Example/OneRelationships.php
+++ b/tests/FreeElephants/JsonApiToolkit/DTO/Example/OneRelationships.php
@@ -7,5 +7,5 @@
 
 class OneRelationships extends AbstractRelationships
 {
-    public RelationshipToOne $one;
+    public \FreeElephants\JsonApi\DTO\RelationshipToOne $one;
 }