diff --git a/main.tf b/main.tf
index 91a9501..ae2bf73 100644
--- a/main.tf
+++ b/main.tf
@@ -35,7 +35,7 @@ module "cluster" {
   cluster_endpoint_private_access          = var.cluster_endpoint_private_access
   enable_cluster_creator_admin_permissions = var.enable_cluster_creator_admin_permissions
   access_entries                           = local.access_entries
-  cluster_upgrade_policy                   = "STANDARD"
+  cluster_upgrade_policy                   = { support_type = "STANDARD" }
   cluster_enabled_log_types = [
     "api",
     "audit",