diff --git a/common/variables.tf b/common/variables.tf
index 6b35a7c..79f4a84 100644
--- a/common/variables.tf
+++ b/common/variables.tf
@@ -74,3 +74,7 @@ variable "require_explicit_encryption" {
   type        = bool
   default     = false
 }
+
+# TBD
+# variable "kms_policy_read_arns" { }
+# variable "kms_policy_write_arns" { }