diff --git a/examples/custom-prefix-lists/main.tf b/examples/custom-prefix-lists/main.tf
index 71bb23e..b62160f 100644
--- a/examples/custom-prefix-lists/main.tf
+++ b/examples/custom-prefix-lists/main.tf
@@ -6,7 +6,7 @@ data "aws_vpc" "vpc" {
 }
 
 module "sg_bigfix" {
-  source            = "git@github.e.it.census.gov:terraform-modules/aws-common-security-groups.git//custom?ref=feature/add-prefix-list"
+  source            = "git@github.e.it.census.gov:terraform-modules/aws-common-security-groups.git//custom?ref=tf-upgrade"
   vpc_id            = data.aws_vpc.vpc.id
   name              = "ois-bigfix"
   description       = "OIS Bigfix Service Port"