diff --git a/src/Bundle/ChillMainBundle/Entity/Notification.php b/src/Bundle/ChillMainBundle/Entity/Notification.php
index 40fa17a91..4e6953239 100644
--- a/src/Bundle/ChillMainBundle/Entity/Notification.php
+++ b/src/Bundle/ChillMainBundle/Entity/Notification.php
@@ -11,7 +11,10 @@ declare(strict_types=1);
 
 namespace Chill\MainBundle\Entity;
 
+use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
+use Chill\MainBundle\Entity\Embeddable\CommentEmbeddable;
 use DateTimeImmutable;
+use DateTimeInterface;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
@@ -23,7 +26,7 @@ use Doctrine\ORM\Mapping as ORM;
  * )
  * @ORM\HasLifecycleCallbacks
  */
-class Notification
+class Notification implements TrackUpdateInterface
 {
     private array $addedAddresses = [];
 
@@ -82,6 +85,16 @@ class Notification
      */
     private Collection $unreadBy;
 
+    /**
+     * @ORM\Column(type="datetime_immutable")
+     */
+    private ?DateTimeImmutable $updatedAt;
+
+    /**
+     * @ORM\ManyToOne(targetEntity=User::class)
+     */
+    private ?User $updatedBy;
+
     public function __construct()
     {
         $this->addressees = new ArrayCollection();
@@ -172,6 +185,16 @@ class Notification
         return $this->unreadBy;
     }
 
+    public function getUpdatedAt(): ?DateTimeImmutable
+    {
+        return $this->updatedAt;
+    }
+
+    public function getUpdatedBy(): ?User
+    {
+        return $this->updatedBy;
+    }
+
     public function isReadBy(User $user): bool
     {
         return !$this->unreadBy->contains($user);
@@ -276,4 +299,18 @@ class Notification
 
         return $this;
     }
+
+    public function setUpdatedAt(DateTimeInterface $datetime): self
+    {
+        $this->updatedAt = $datetime;
+
+        return $this;
+    }
+
+    public function setUpdatedBy(User $user): self
+    {
+        $this->updatedBy = $user;
+
+        return $this;
+    }
 }
diff --git a/src/Bundle/ChillMainBundle/migrations/Version20211229140308.php b/src/Bundle/ChillMainBundle/migrations/Version20211229140308.php
new file mode 100644
index 000000000..cfa0b4b5a
--- /dev/null
+++ b/src/Bundle/ChillMainBundle/migrations/Version20211229140308.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Main;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20211229140308 extends AbstractMigration
+{
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_main_notification DROP CONSTRAINT FK_5BDC806765FF1AEC');
+        $this->addSql('DROP INDEX IDX_5BDC806765FF1AEC');
+        $this->addSql('ALTER TABLE chill_main_notification DROP updatedAt');
+        $this->addSql('ALTER TABLE chill_main_notification DROP updatedBy_id');
+    }
+
+    public function getDescription(): string
+    {
+        return 'Notification: add updated tracking information';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_main_notification ADD updatedAt TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL');
+        $this->addSql('UPDATE chill_main_notification SET updatedAt="date"');
+        $this->addSql('ALTER TABLE chill_main_notification ADD updatedBy_id INT DEFAULT NULL');
+        $this->addSql('COMMENT ON COLUMN chill_main_notification.updatedAt IS \'(DC2Type:datetime_immutable)\'');
+        $this->addSql('ALTER TABLE chill_main_notification ADD CONSTRAINT FK_5BDC806765FF1AEC FOREIGN KEY (updatedBy_id) REFERENCES users (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('CREATE INDEX IDX_5BDC806765FF1AEC ON chill_main_notification (updatedBy_id)');
+    }
+}