diff --git a/next.config.ts b/next.config.ts
index 7d8d4d0..6ea7e78 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -1,7 +1,10 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  output: "standalone",
+  // `standalone` exists for the Docker image, which copies `.next/standalone`
+  // and runs `node server.js`. Vercel builds its own output and does not want
+  // it, so opt out there via the `VERCEL` build env var.
+  output: process.env.VERCEL ? undefined : "standalone",
   reactStrictMode: true,
   typedRoutes: true,
   // Pin the workspace root so it can never be inferred outside this repo.