diff --git a/README.md b/README.md
index e0867f3..1469dee 100644
--- a/README.md
+++ b/README.md
@@ -143,6 +143,7 @@ module "ecs_apps" {
 | alb\_internal\_id | n/a |
 | alb\_internal\_listener\_https\_arn | n/a |
 | alb\_internal\_listener\_test\_traffic\_arn | n/a |
+| alb\_internal\_secgrp\_id | n/a |
 | alb\_internal\_zone\_id | n/a |
 | alb\_listener\_https\_arn | n/a |
 | alb\_listener\_test\_traffic\_arn | n/a |
diff --git a/_outputs.tf b/_outputs.tf
index a947430..61b3481 100644
--- a/_outputs.tf
+++ b/_outputs.tf
@@ -86,6 +86,10 @@ output "alb_internal_listener_test_traffic_arn" {
   value = aws_lb_listener.ecs_test_https_internal.*.arn
 }
 
+output "alb_internal_secgrp_id" {
+  value = aws_security_group.alb_internal.*.id
+}
+
 output "ecs_nodes_secgrp_id" {
   value = aws_security_group.ecs_nodes.id
 }