diff --git a/instrumentation.ts b/instrumentation.ts
index 0efc67f..b5e1be1 100644
--- a/instrumentation.ts
+++ b/instrumentation.ts
@@ -1,7 +1,6 @@
-import { startEmailQueueWorker } from "@/lib/email-queue";
-
 export async function register() {
   if (process.env.NEXT_RUNTIME === "nodejs") {
+    const { startEmailQueueWorker } = await import("@/lib/email-queue");
     startEmailQueueWorker();
   }
 }
diff --git a/next.config.ts b/next.config.ts
index 68a6c64..8bf37ce 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -2,6 +2,7 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   output: "standalone",
+  serverExternalPackages: ["nodemailer"],
 };
 
 export default nextConfig;