diff --git a/main.tf b/main.tf
index 49ac842..edf3ea1 100644
--- a/main.tf
+++ b/main.tf
@@ -23,7 +23,7 @@ locals {
 #
 
 module "vpc" {
-  source     = "git@github.com:cloudposse/terraform-aws-vpc.git?ref=tags/0.20.3"
+  source     = "git@github.com:cloudposse/terraform-aws-vpc.git?ref=tags/0.25.0"
   stage      = var.stage
   name       = var.name
   attributes = var.attributes
@@ -39,7 +39,7 @@ module "vpc" {
 #}
 #
 module "subnets" {
-  source               = "git@github.com:cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.37.3"
+  source               = "git@github.com:cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.39.0"
   availability_zones   = var.availability_zones
   stage                = var.stage
   name                 = var.name