diff --git a/server/routes/droneDetection.js b/server/routes/droneDetection.js
index 99996c6..3e7de9b 100644
--- a/server/routes/droneDetection.js
+++ b/server/routes/droneDetection.js
@@ -2,6 +2,7 @@ const express = require('express');
 const router = express.Router();
 const Joi = require('joi');
 const { DroneDetection, Device } = require('../models');
+const { Op } = require('sequelize');
 const AlertService = require('../services/alertService');
 const { validateRequest } = require('../middleware/validation');
 
diff --git a/server/routes/user.js b/server/routes/user.js
index 248d2bf..4b87ab4 100644
--- a/server/routes/user.js
+++ b/server/routes/user.js
@@ -4,6 +4,7 @@ const Joi = require('joi');
 const bcrypt = require('bcryptjs');
 const jwt = require('jsonwebtoken');
 const { User } = require('../models');
+const { Op } = require('sequelize');
 const { validateRequest } = require('../middleware/validation');
 const { authenticateToken, requireRole } = require('../middleware/auth');