diff --git a/base/outputs.tf b/base/outputs.tf
index a8f108e..eeb5798 100644
--- a/base/outputs.tf
+++ b/base/outputs.tf
@@ -15,3 +15,7 @@ output "rt_dmz_id" {
 output "vpc_id" {
   value = "${aws_vpc.vpc.id}"
 }
+
+output "vpc_default_security_group_id" {
+  value = "${aws_vpc.vpc.default_security_group_id}"
+}