diff --git a/terraform/environments/cdpt-chaps/database.tf b/terraform/environments/cdpt-chaps/database.tf
index 2c579597385..7d89f7217e6 100644
--- a/terraform/environments/cdpt-chaps/database.tf
+++ b/terraform/environments/cdpt-chaps/database.tf
@@ -45,8 +45,8 @@ resource "aws_security_group_rule" "ecs_to_rds" {
   from_port                = 1433
   to_port                  = 1433
   protocol                 = "tcp"
-  security_group_id        = db.id
-  source_security_group_id = cluster_ec2.id
+  security_group_ids       = [aws_security_group.db.id]
+  source_security_group_id = aws_security_group.cluster_ec2.id
 }
 
 resource "aws_security_group" "db" {