diff --git a/examples/safer_cluster_iap_bastion/kms.tf b/examples/safer_cluster_iap_bastion/kms.tf
index 885e43a313..85d4311315 100644
--- a/examples/safer_cluster_iap_bastion/kms.tf
+++ b/examples/safer_cluster_iap_bastion/kms.tf
@@ -16,7 +16,7 @@
 
 module "kms" {
   source          = "terraform-google-modules/kms/google"
-  version         = "~> 3.0"
+  version         = "~> 4.0"
   project_id      = var.project_id
   location        = var.region
   keyring         = "gke-keyring"