diff --git a/src/function/defaults.ts b/src/function/defaults.ts
index f160acc..e71f13f 100644
--- a/src/function/defaults.ts
+++ b/src/function/defaults.ts
@@ -6,7 +6,7 @@ export const functionDefaults = {
     path: process.cwd(),
     phpVersion: '8.1',
     memorySize: 1024,
-    architecture: Architecture.X86_64,
+    architecture: Architecture.ARM_64,
     excludedPhpPaths: ['.git', '.idea', 'cdk.out', 'node_modules', '.bref', '.serverless', 'tests'],
 } as const;