diff --git a/3-networks/modules/transitivity/main.tf b/3-networks/modules/transitivity/main.tf
old mode 100755
new mode 100644
index c7e86d0f1..5581100ec
--- a/3-networks/modules/transitivity/main.tf
+++ b/3-networks/modules/transitivity/main.tf
@@ -20,7 +20,7 @@
 
 module "service_account" {
   source     = "terraform-google-modules/service-accounts/google"
-  version    = "~> 3.0"
+  version    = "~> 4.1"
   project_id = var.project_id
   names      = ["transitivity-gw"]
   project_roles = [