diff --git a/main.tf b/main.tf
index b174fa9..e1fe50b 100644
--- a/main.tf
+++ b/main.tf
@@ -123,7 +123,8 @@ module "rotation_lambda" {
     }
   }
 
-  recreate_missing_package = var.recreate_missing_package
+  recreate_missing_package  = var.recreate_missing_package
+  role_permissions_boundary = var.role_permissions_boundary
 
   attach_policy_jsons    = true
   policy_jsons           = local.lambda_policies
diff --git a/variables.tf b/variables.tf
index 3291f33..b95fc82 100644
--- a/variables.tf
+++ b/variables.tf
@@ -112,4 +112,10 @@ variable "recreate_missing_package" {
   description = "Whether to recreate missing Lambda package if it is missing locally or not"
   type        = bool
   default     = true
+}
+
+variable "role_permissions_boundary" {
+  description = "Optional permissions boundary for rotation lambda IAM role."
+  type        = string
+  default     = null
 }
\ No newline at end of file