diff --git a/tests/microsoft_ad/main.tf b/tests/microsoft_ad/main.tf
index f945b12..0f6fbfa 100644
--- a/tests/microsoft_ad/main.tf
+++ b/tests/microsoft_ad/main.tf
@@ -14,7 +14,7 @@ resource "random_string" "domain" {
 }
 
 module "vpc" {
-  source = "git::https://github.com/terraform-aws-modules/terraform-aws-vpc.git?ref=v5.5.3"
+  source = "git::https://github.com/terraform-aws-modules/terraform-aws-vpc.git?ref=v5.6.0"
 
   name            = "tardigrade-test-directory-service-${random_string.domain.result}"
   cidr            = "10.0.0.0/16"