diff --git a/models/items.model.js b/models/items.model.js
index 3769c87..33131ed 100644
--- a/models/items.model.js
+++ b/models/items.model.js
@@ -58,10 +58,12 @@ const Item = sequelize.define('item', {
   createdAt: {
     type: DataTypes.DATE,
     defaultValue: DataTypes.NOW,
+    allowNull: true,
   },
   updatedAt: {
     type: DataTypes.DATE,
     defaultValue: DataTypes.NOW,
+    allowNull: true,
   },
 });