diff --git a/backend/internal/device/mysql_storage.go b/backend/internal/device/mysql_storage.go
index 9756ad6..d9ee73a 100644
--- a/backend/internal/device/mysql_storage.go
+++ b/backend/internal/device/mysql_storage.go
@@ -50,9 +50,12 @@ func (s *MySQLStorage) GetDevices() []Device {
 	devices := make([]Device, 0)
 	for rows.Next() {
 		var device Device
-		if err := rows.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &device.CreatedAt, &device.UpdatedAt); err != nil {
+		var createdAt, updatedAt int64
+		if err := rows.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &createdAt, &updatedAt); err != nil {
 			continue
 		}
+		device.CreatedAt = createdAt
+		device.UpdatedAt = updatedAt
 		devices = append(devices, device)
 	}
 
@@ -65,10 +68,13 @@ func (s *MySQLStorage) GetDevice(id string) (Device, bool) {
 	row := s.db.QueryRow(query, id)
 
 	var device Device
-	err := row.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &device.CreatedAt, &device.UpdatedAt)
+	var createdAt, updatedAt int64
+	err := row.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &createdAt, &updatedAt)
 	if err != nil {
 		return Device{}, false
 	}
+	device.CreatedAt = createdAt
+	device.UpdatedAt = updatedAt
 
 	return device, true
 }
@@ -79,11 +85,16 @@ func (s *MySQLStorage) GetDeviceByToken(token string) (Device, bool) {
 	row := s.db.QueryRow(query, token)
 
 	var device Device
-	err := row.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &device.CreatedAt, &device.UpdatedAt)
+	var createdAt, updatedAt int64
+
+	err := row.Scan(&device.ID, &device.Name, &device.IP, &device.Token, &device.Status, &createdAt, &updatedAt)
 	if err != nil {
 		return Device{}, false
 	}
 
+	device.CreatedAt = createdAt
+	device.UpdatedAt = updatedAt
+
 	return device, true
 }
 
diff --git a/backend/monitor-server b/backend/monitor-server
index 46c486e..4379b25 100755
Binary files a/backend/monitor-server and b/backend/monitor-server differ