diff --git a/02-overview/main.tf b/02-overview/main.tf
index 3008f182..fdbf07ca 100644
--- a/02-overview/main.tf
+++ b/02-overview/main.tf
@@ -2,7 +2,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 3.0"
+      version = "~> 4.0"
     }
   }
 }
@@ -11,6 +11,22 @@ provider "aws" {
   region = "us-east-1"
 }
 
+resource "aws_default_vpc" "default" {
+  force_destroy = true
+  tags = {
+    Name = "Default VPC"
+  }
+}
+
+resource "aws_default_subnet" "default_az1" {
+  availability_zone = "us-east-1a"
+  force_destroy     = true
+
+  tags = {
+    Name = "Default subnet for us-east-1a"
+  }
+}
+
 resource "aws_instance" "example" {
   ami           = "ami-011899242bb902164" # Ubuntu 20.04 LTS // us-east-1
   instance_type = "t2.micro"