diff --git a/README.md b/README.md
index 9f2a149..903ce44 100644
--- a/README.md
+++ b/README.md
@@ -51,8 +51,7 @@ module "s3_anti_virus" {
   name_update = "s3-anti-virus-updates"
 
   lambda_s3_bucket = "lambda-builds-us-west-2"
-  lambda_version   = "2.0.0"
-  lambda_package   = "anti-virus"
+  lambda_package_key   = "lambda.zip"
 
   av_update_minutes = "180"
   av_scan_buckets   = ["bucket-name"]
diff --git a/anti-virus-scan.tf b/anti-virus-scan.tf
index ce6f10f..8b019a9 100644
--- a/anti-virus-scan.tf
+++ b/anti-virus-scan.tf
@@ -167,7 +167,7 @@ resource "aws_lambda_function" "main_scan" {
   description = "Scans s3 objects with clamav for viruses."
 
   s3_bucket = var.lambda_s3_bucket
-  s3_key    = "${var.lambda_package}/${var.lambda_version}/${var.lambda_package}.zip"
+  s3_key    = local.lambda_package_key
 
   function_name = var.name_scan
   role          = aws_iam_role.main_scan.arn
diff --git a/anti-virus-update.tf b/anti-virus-update.tf
index 07ee2bd..d8118a4 100644
--- a/anti-virus-update.tf
+++ b/anti-virus-update.tf
@@ -124,7 +124,7 @@ resource "aws_lambda_function" "main_update" {
   description = "Updates clamav definitions stored in s3."
 
   s3_bucket = var.lambda_s3_bucket
-  s3_key    = "${var.lambda_package}/${var.lambda_version}/${var.lambda_package}.zip"
+  s3_key    = local.lambda_package_key
 
   function_name = var.name_update
   role          = aws_iam_role.main_update.arn
diff --git a/main.tf b/main.tf
index be3d1f4..ba7c599 100644
--- a/main.tf
+++ b/main.tf
@@ -6,3 +6,7 @@ data "aws_caller_identity" "current" {}
 
 # The AWS partition (commercial or govcloud)
 data "aws_partition" "current" {}
+
+locals {
+  lambda_package_key = var.lambda_package_key != null ? var.lambda_package_key : "${var.lambda_package}/${var.lambda_version}/${var.lambda_package}.zip"
+}
diff --git a/variables.tf b/variables.tf
index 3ef79a4..9a9b651 100644
--- a/variables.tf
+++ b/variables.tf
@@ -23,7 +23,6 @@ variable "lambda_s3_bucket" {
 
 variable "lambda_version" {
   description = "The version the Lambda function to deploy."
-  type        = string
 }
 
 variable "lambda_package" {
@@ -32,6 +31,12 @@ variable "lambda_package" {
   default     = "anti-virus"
 }
 
+variable "lambda_package_key" {
+  description = "The object key for the lambda distribution. If given, the value is used as the key in lieu of the value constructed using `lambda_package` and `lambda_version`."
+  type        = string
+  default     = null
+}
+
 variable "memory_size" {
   description = "Lambda memory allocation, in MB"
   type        = string