diff --git a/src/Bundle/ChillMainBundle/Entity/Notification.php b/src/Bundle/ChillMainBundle/Entity/Notification.php
index 51ea0e39f..3854525b8 100644
--- a/src/Bundle/ChillMainBundle/Entity/Notification.php
+++ b/src/Bundle/ChillMainBundle/Entity/Notification.php
@@ -41,44 +41,44 @@ class Notification
      * @ORM\GeneratedValue
      * @ORM\Column(type="integer")
      */
-    private $id;
+    private int $id;
 
     /**
      * @ORM\Column(type="text")
      */
-    private $message;
+    private string $message;
 
     /**
      * @ORM\Column(type="datetime_immutable")
      */
-    private $date;
+    private \DateTimeImmutable $date;
 
     /**
      * @ORM\ManyToOne(targetEntity=User::class)
      * @ORM\JoinColumn(nullable=false)
      */
-    private $sender;
+    private User $sender;
 
     /**
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_notification_addresses_user")
      */
-    private $addressees;
+    private Collection $addressees;
 
     /**
      * @ORM\Column(type="string", length=255)
      */
-    private $relatedEntityClass;
+    private string $relatedEntityClass;
 
     /**
      * @ORM\Column(type="integer")
      */
-    private $relatedEntityId;
+    private int $relatedEntityId;
 
     /**
      * @ORM\Column(type="json")
      */
-    private $read;
+    private array $read;
 
     public function __construct()
     {