diff --git a/README.md b/README.md
index 132e873..a4a564f 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Call the module with the specific version you want using the ```ref``` query par
 # API Gateway
 # -----------------------------------------------------------------------------
 module "apigateway" {
-  source            = "github.com/rpstreef/tf-apigateway?ref=v1.0"
+  source            = "github.com/nhammond101/tf-apigateway?ref=v1.5.3"
   resource_tag_name = var.resource_tag_name
   namespace         = var.namespace
   region            = var.region
@@ -64,4 +64,4 @@ Use the resources parameter ```var.resources``` to specify which API endpoints y
 
 ### v1.0
 
-Initial release
\ No newline at end of file
+Initial release
diff --git a/outputs.tf b/outputs.tf
index ddae136..a98bf31 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -7,7 +7,7 @@ output "rest_api_id" {
 }
 
 output "api_url" {
-  value = aws_api_gateway_domain_name._[0].regional_domain_name
+  value = length(aws_api_gateway_domain_name._) > 0 ? aws_api_gateway_domain_name._[0].regional_domain_name : null
 }
 
 output "api_domain_name" {