diff --git a/server/db.ts b/server/db.ts
index 0071107..8a1c88d 100644
--- a/server/db.ts
+++ b/server/db.ts
@@ -32,7 +32,7 @@ if (isProduction && dbUrl && (dbUrl.includes('logiflow-db') || dbUrl.includes('l
   
   // Test connection
   try {
-    await pool.connect().then(client => {
+    await pool.connect().then((client: any) => {
       console.log('✅ PostgreSQL connection test successful');
       client.release();
     });
diff --git a/server/index.production.ts b/server/index.production.ts
index 8e5743a..e78f153 100644
--- a/server/index.production.ts
+++ b/server/index.production.ts
@@ -1,4 +1,4 @@
-import express, { type Request, Response, NextFunction } from "express";
+import express, { type Express, type Request, type Response, type NextFunction } from "express";
 import { createServer, type Server } from "http";
 import { fileURLToPath } from 'url';
 import { dirname, join } from 'path';
@@ -40,7 +40,7 @@ app.use((req, res, next) => {
 // Simple production routes
 async function registerProductionRoutes(app: Express): Promise<Server> {
   // Health check endpoint
-  app.get('/api/health', (req, res) => {
+  app.get('/api/health', (req: Request, res: Response) => {
     res.status(200).json({
       status: 'healthy',
       timestamp: new Date().toISOString(),
@@ -53,7 +53,7 @@ async function registerProductionRoutes(app: Express): Promise<Server> {
   setupLocalAuth(app);
   
   // Basic API routes for production
-  app.get('/api/groups', requireAuth, async (req, res) => {
+  app.get('/api/groups', requireAuth, async (req: Request, res: Response) => {
     try {
       const groups = await storage.getGroups();
       res.json(groups);
@@ -63,7 +63,7 @@ async function registerProductionRoutes(app: Express): Promise<Server> {
     }
   });
 
-  app.get('/api/suppliers', requireAuth, async (req, res) => {
+  app.get('/api/suppliers', requireAuth, async (req: Request, res: Response) => {
     try {
       const suppliers = await storage.getSuppliers();
       res.json(suppliers);
@@ -73,7 +73,7 @@ async function registerProductionRoutes(app: Express): Promise<Server> {
     }
   });
 
-  app.get('/api/orders', requireAuth, async (req, res) => {
+  app.get('/api/orders', requireAuth, async (req: Request, res: Response) => {
     try {
       const orders = await storage.getOrders();
       res.json(orders);
@@ -84,7 +84,7 @@ async function registerProductionRoutes(app: Express): Promise<Server> {
   });
 
   // Weather API for compatibility
-  app.get('/api/weather', async (req, res) => {
+  app.get('/api/weather', async (req: Request, res: Response) => {
     try {
       const weatherData = {
         today: {
diff --git a/server/localAuth.production.ts b/server/localAuth.production.ts
index 115e110..9b5398d 100644
--- a/server/localAuth.production.ts
+++ b/server/localAuth.production.ts
@@ -107,7 +107,7 @@ async function createDefaultAdminUser() {
           await storage.updateUser(existingAdmin.id, { password: newHashedPassword });
           console.log('✅ Admin password migrated to new format');
         } catch (error) {
-          console.log('⚠️ Could not migrate password, will try multiple formats:', error.message);
+          console.log('⚠️ Could not migrate password, will try multiple formats:', (error as Error).message);
         }
       }
     }
diff --git a/server/storage.ts b/server/storage.ts
index f341168..9d84018 100644
--- a/server/storage.ts
+++ b/server/storage.ts
@@ -452,7 +452,7 @@ export class DatabaseStorage implements IStorage {
       where: groupIds ? inArray(deliveries.groupId, groupIds) : undefined,
     });
     
-    return results.map(result => ({
+    return results.map((result: any) => ({
       ...result,
       order: result.order || undefined,
     }));
diff --git a/tsconfig.json b/tsconfig.json
index a0203ee..244ce53 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,14 +5,16 @@
     "incremental": true,
     "tsBuildInfoFile": "./node_modules/typescript/tsbuildinfo",
     "noEmit": true,
-    "module": "ESNext",
+    "target": "ES2020",
+    "module": "ES2022",
     "strict": true,
-    "lib": ["esnext", "dom", "dom.iterable"],
+    "lib": ["ES2020", "dom", "dom.iterable"],
     "jsx": "preserve",
     "esModuleInterop": true,
     "skipLibCheck": true,
     "allowImportingTsExtensions": true,
     "moduleResolution": "bundler",
+    "downlevelIteration": true,
     "baseUrl": ".",
     "types": ["node", "vite/client"],
     "paths": {