diff --git a/main.tf b/main.tf
index cbc8f0e..4b10fb9 100644
--- a/main.tf
+++ b/main.tf
@@ -14,11 +14,17 @@ variable "database_password" {
 }
 
 module "vpc" {
-  source = "terraform-aws-modules/vpc/aws"
+  source  = "terraform-aws-modules/vpc/aws"
+  version = "~> 6.0"
+
+  manage_default_network_acl    = false
+  manage_default_route_table    = false
+  manage_default_security_group = false
 }
 
 module "db" {
-  source     = "terraform-aws-modules/rds/aws"
+  source  = "terraform-aws-modules/rds/aws"
+  version = "~> 6.0"
   identifier = "k8sdb"
 
   engine               = "mysql"
@@ -37,7 +43,8 @@ module "db" {
 }
 
 module "lambda_function" {
-  source = "terraform-aws-modules/lambda/aws"
+  source  = "terraform-aws-modules/lambda/aws"
+  version = "~> 8.0"
 
   function_name = "myfunction"
   handler       = "index.handler"