diff --git a/terraform/environments/delius-core/modules/delius_environment/common_ecs.tf b/terraform/environments/delius-core/modules/delius_environment/common_ecs.tf
index f2f15d74a80..5f28866a98a 100644
--- a/terraform/environments/delius-core/modules/delius_environment/common_ecs.tf
+++ b/terraform/environments/delius-core/modules/delius_environment/common_ecs.tf
@@ -1,5 +1,5 @@
 module "ecs" {
-  source = "github.com/ministryofjustice/modernisation-platform-terraform-ecs-cluster//cluster?ref=v4.3.0"
+  source = "github.com/ministryofjustice/modernisation-platform-terraform-ecs-cluster//cluster?ref=v5.0.0"
 
   name = "delius-core-${var.env_name}-cluster"