diff --git a/package.json b/package.json
index 17d0396..3db93a8 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,9 @@
   "name": "gippidy",
   "version": "0.1.0",
   "private": true,
+  "engines": {
+    "node": "22.x"
+  },
   "scripts": {
     "dev": "next dev",
     "build": "next build --turbo",
@@ -27,4 +30,4 @@
     "@types/react-dom": "^19",
     "typescript": "^5"
   }
-}
\ No newline at end of file
+}
diff --git a/railpack.json b/railpack.json
deleted file mode 100644
index 5ad079c..0000000
--- a/railpack.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "packages": {
-    "node": "22",
-    "pnpm": "10"
-  },
-  "caches": {
-    "next": {
-      "directory": ".next/cache",
-      "type": "shared"
-    }
-  },
-  "deploy": {
-    "startCmd": "pnpm start"
-  }
-}
diff --git a/tests/unit.test.ts b/tests/unit.test.ts
index a5a2c69..d155bbf 100644
--- a/tests/unit.test.ts
+++ b/tests/unit.test.ts
@@ -845,6 +845,10 @@ test('dependency footprint stays deliberately small and SDK-free while using dir
     nextConfigSource.includes("optimizePackageImports: ['highlight.js']"),
     'highlight.js imports should stay optimized for faster client bundles',
   );
+  assert.ok(
+    pkg.engines?.node === '22.x',
+    'package.json should pin the Node major version for deploys',
+  );
   assert.ok(
     chatRouteSource.includes("fetch('https://api.openai.com/v1/responses'") &&
       chatRouteSource.includes("fetch('https://api.openai.com/v1/chat/completions'") &&
@@ -852,12 +856,9 @@ test('dependency footprint stays deliberately small and SDK-free while using dir
       chatRouteSource.includes('https://generativelanguage.googleapis.com/v1beta/models/${model}:streamGenerateContent?key=${apiKey}&alt=sse'),
     'provider calls should use the direct HTTP APIs instead of heavyweight SDKs',
   );
-  const railpackConfig = readFileSync(join(import.meta.dirname, '../railpack.json'), 'utf8');
   assert.ok(
-    railpackConfig.includes('"startCmd": "pnpm start"') &&
-      !railpackConfig.includes('.next/standalone') &&
-      !railpackConfig.includes('standalone/server.js'),
-    'Railpack should use the normal app start command and should not depend on standalone build artifacts',
+    !existsSync(join(import.meta.dirname, '../railpack.json')),
+    'the repo should no longer rely on a railpack.json file for deploy configuration',
   );
 });
 
@@ -1287,7 +1288,7 @@ test('getOrCreateKey: same server JWK produces same key across two calls (cross-
 
 // ── CSS layout regression ────────────────────────────────────────────────────
 
-import { readFileSync } from 'node:fs';
+import { existsSync, readFileSync } from 'node:fs';
 import { join } from 'node:path';
 
 test('input-row uses align-items: flex-start so the > prompt icon stays at the top', () => {