diff --git a/backend/src/index.ts b/backend/src/index.ts
index 4383c532..c057419b 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -23,6 +23,9 @@ dotenv.config();
 const app = express();
 const PORT = process.env.PORT || 3001;
 
+// Trust proxy when behind reverse proxy (Caddy)
+app.set('trust proxy', true);
+
 // Initialize Prisma client
 export const prisma = new PrismaClient({
   log: ['query', 'info', 'warn', 'error'],