diff --git a/cloudformation/main.yml b/cloudformation/main.yml
index 7c14fb0..5edf7e3 100644
--- a/cloudformation/main.yml
+++ b/cloudformation/main.yml
@@ -126,13 +126,20 @@ Resources:
         Format: esm
         Minify: true
         OutExtension:
-          - .js=.js
-        Target: "node22"
+          - .js=.mjs
+        Target: "es2022"
         Sourcemap: false
         EntryPoints:
           - api/lambda.js
         External:
           - aws-sdk
+        Banner:
+          - js=import path from 'path';
+            import { fileURLToPath } from 'url';
+            import { createRequire as topLevelCreateRequire } from 'module';
+            const require = topLevelCreateRequire(import.meta.url);
+            const __filename = fileURLToPath(import.meta.url);
+            const __dirname = path.dirname(__filename);
     Properties:
       Architectures: [arm64]
       CodeUri: ../dist