diff --git a/main.tf b/main.tf
index 935df63..09b0604 100644
--- a/main.tf
+++ b/main.tf
@@ -56,7 +56,7 @@ resource "kubernetes_storage_class" "ebs_encrypted" {
 module "efs" {
   # tflint-ignore: terraform_module_version
   # tflint-ignore: terraform_module_pinned_source
-  source = "git@github.e.it.census.gov:terraform-modules/aws-efs.git?ref=main"
+  source = "git@github.e.it.census.gov:terraform-modules/aws-efs.git?ref=master"
 
   name            = var.cluster_name
   vpc_id          = var.vpc_id