diff --git a/dist/config/packages/monsieurbiz_sylius_shipping_slot_plugin.yaml b/dist/config/packages/monsieurbiz_sylius_shipping_slot_plugin.yaml
index 7442023..6382230 100644
--- a/dist/config/packages/monsieurbiz_sylius_shipping_slot_plugin.yaml
+++ b/dist/config/packages/monsieurbiz_sylius_shipping_slot_plugin.yaml
@@ -4,3 +4,9 @@ imports:
 monsieurbiz_sylius_shipping_slot:
     expiration:
         slot: '30 minutes'
+
+sylius_resource:
+    resources:
+        monsieurbiz_shipping_slot.slot:
+            classes:
+                model: App\Entity\Shipping\Slot
diff --git a/dist/src/Entity/Shipping/ShippingSlotConfig.php b/dist/src/Entity/Shipping/ShippingSlotConfig.php
new file mode 100644
index 0000000..61b1726
--- /dev/null
+++ b/dist/src/Entity/Shipping/ShippingSlotConfig.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of SyliusShippingSlotPlugin website.
+ *
+ * (c) SyliusShippingSlotPlugin <sylius+syliusshippingslotplugin@monsieurbiz.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace App\Entity\Shipping;
+
+use Doctrine\ORM\Mapping as ORM;
+use MonsieurBiz\SyliusShippingSlotPlugin\Entity\ShippingSlotConfig as BaseShippingSlotConfig;
+
+/**
+ * @ORM\Entity
+ * @ORM\Table(name="monsieurbiz_shipping_slot_config")
+ */
+final class ShippingSlotConfig extends BaseShippingSlotConfig
+{
+
+}
diff --git a/dist/src/Entity/Shipping/Slot.php b/dist/src/Entity/Shipping/Slot.php
new file mode 100644
index 0000000..ba50e45
--- /dev/null
+++ b/dist/src/Entity/Shipping/Slot.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of SyliusShippingSlotPlugin website.
+ *
+ * (c) SyliusShippingSlotPlugin <sylius+syliusshippingslotplugin@monsieurbiz.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace App\Entity\Shipping;
+
+use Doctrine\ORM\Mapping as ORM;
+use MonsieurBiz\SyliusShippingSlotPlugin\Entity\Slot as BaseSlot;
+
+/**
+ * @ORM\Entity
+ * @ORM\Table(name="monsieurbiz_shipping_slot_slot")
+ */
+final class Slot extends BaseSlot
+{
+
+}
diff --git a/src/Entity/ShippingSlotConfig.php b/src/Entity/ShippingSlotConfig.php
index 8428657..6edcdf3 100644
--- a/src/Entity/ShippingSlotConfig.php
+++ b/src/Entity/ShippingSlotConfig.php
@@ -27,23 +27,23 @@
 
 class ShippingSlotConfig implements ShippingSlotConfigInterface
 {
-    private ?int $id = null;
+    protected ?int $id = null;
 
-    private ?string $name = null;
+    protected ?string $name = null;
 
-    private ?string $timezone = null;
+    protected ?string $timezone = null;
 
-    private ?array $rrules = null;
+    protected ?array $rrules = null;
 
-    private ?int $preparationDelay = null;
+    protected ?int $preparationDelay = null;
 
-    private ?int $pickupDelay = null;
+    protected ?int $pickupDelay = null;
 
-    private ?int $durationRange = null;
+    protected ?int $durationRange = null;
 
-    private ?int $availableSpots = null;
+    protected ?int $availableSpots = null;
 
-    private ?string $color = null;
+    protected ?string $color = null;
 
     public function getId(): ?int
     {
diff --git a/src/Entity/Slot.php b/src/Entity/Slot.php
index 2c0fcc0..eb7fbf4 100644
--- a/src/Entity/Slot.php
+++ b/src/Entity/Slot.php
@@ -23,19 +23,19 @@ class Slot implements SlotInterface
 {
     use TimestampableTrait;
 
-    private ?int $id = null;
+    protected ?int $id = null;
 
-    private ?DateTimeInterface $timestamp = null;
+    protected ?DateTimeInterface $timestamp = null;
 
-    private ?int $preparationDelay = null;
+    protected ?int $preparationDelay = null;
 
-    private ?int $pickupDelay = null;
+    protected ?int $pickupDelay = null;
 
-    private ?int $durationRange = null;
+    protected ?int $durationRange = null;
 
-    private ?ShipmentInterface $shipment = null;
+    protected ?ShipmentInterface $shipment = null;
 
-    private ?ShippingSlotConfigInterface $shippingSlotConfig = null;
+    protected ?ShippingSlotConfigInterface $shippingSlotConfig = null;
 
     public function getId(): ?int
     {
diff --git a/src/Resources/config/doctrine/ShippingSlotConfig.orm.xml b/src/Resources/config/doctrine/ShippingSlotConfig.orm.xml
index 5636807..6b2f902 100644
--- a/src/Resources/config/doctrine/ShippingSlotConfig.orm.xml
+++ b/src/Resources/config/doctrine/ShippingSlotConfig.orm.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 
 <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
-    <entity name="MonsieurBiz\SyliusShippingSlotPlugin\Entity\ShippingSlotConfig" table="monsieurbiz_shipping_slot_config">
+    <mapped-superclass name="MonsieurBiz\SyliusShippingSlotPlugin\Entity\ShippingSlotConfig" table="monsieurbiz_shipping_slot_config">
         <id name="id" column="id" type="integer">
             <generator strategy="AUTO"/>
         </id>
@@ -13,5 +13,5 @@
         <field name="durationRange" column="duration_range" type="integer" nullable="true" />
         <field name="availableSpots" column="available_spots" type="integer" nullable="true" />
         <field name="color" column="color" type="string" length="10" nullable="true" />
-    </entity>
+    </mapped-superclass>
 </doctrine-mapping>
diff --git a/src/Resources/config/doctrine/Slot.orm.xml b/src/Resources/config/doctrine/Slot.orm.xml
index 04fb42a..056ac19 100644
--- a/src/Resources/config/doctrine/Slot.orm.xml
+++ b/src/Resources/config/doctrine/Slot.orm.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 
 <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gedmo="http://gediminasm.org/schemas/orm/doctrine-extensions-mapping" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
-    <entity name="MonsieurBiz\SyliusShippingSlotPlugin\Entity\Slot" table="monsieurbiz_shipping_slot_slot">
+    <mapped-superclass name="MonsieurBiz\SyliusShippingSlotPlugin\Entity\Slot" table="monsieurbiz_shipping_slot_slot">
         <id name="id" column="id" type="integer">
             <generator strategy="AUTO"/>
         </id>
@@ -21,5 +21,5 @@
         <many-to-one field="shippingSlotConfig" target-entity="MonsieurBiz\SyliusShippingSlotPlugin\Entity\ShippingSlotConfigInterface">
             <join-column name="shipping_slot_config_id" on-delete="SET NULL" />
         </many-to-one>
-    </entity>
+    </mapped-superclass>
 </doctrine-mapping>