diff --git a/README.md b/README.md
index 302beefb..92c63676 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ There are two DNS zones for cluster DNS.
 ### Zone Build
 
 ```
-make {dev/prod}-domain domain-infra-{plan/apply}
+make {dev/prod}-domain domains-infra-{plan/apply}
 ```
 
 There is also an NS record for delegation from teacherservices.cloud to development.teacherservices.cloud,
diff --git a/custom_domains/terraform/infrastructure/main.tf b/custom_domains/terraform/infrastructure/main.tf
index a1de50e9..307873e6 100644
--- a/custom_domains/terraform/infrastructure/main.tf
+++ b/custom_domains/terraform/infrastructure/main.tf
@@ -1,5 +1,5 @@
 module "domains_infrastructure" {
-  source      = "git::https://github.com/DFE-Digital/terraform-modules.git//domains/infrastructure?ref=0.5.0"
+  source      = "git::https://github.com/DFE-Digital/terraform-modules.git//domains/infrastructure?ref=testing"
   hosted_zone = var.hosted_zone
   tags        = var.tags
 }
@@ -15,6 +15,6 @@ resource "azurerm_dns_ns_record" "dev_ns_record" {
 }
 
 module "dns_records" {
-  source      = "git::https://github.com/DFE-Digital/terraform-modules.git//dns/records?ref=0.5.0"
+  source      = "git::https://github.com/DFE-Digital/terraform-modules.git//dns/records?ref=testing"
   hosted_zone = var.hosted_zone
 }