diff --git a/main.tf b/main.tf
index 148ae1d..9ddfaa9 100644
--- a/main.tf
+++ b/main.tf
@@ -260,7 +260,7 @@ data "archive_file" "this" {
 # Create Lambda function for stop or start aws resources
 resource "aws_lambda_function" "this" {
   filename         = data.archive_file.this.output_path
-  source_code_hash = filebase64sha256(data.archive_file.this.output_path)
+  source_code_hash = data.archive_file.this.output_base64sha256
   function_name    = var.name
   role             = var.custom_iam_role_arn == null ? aws_iam_role.this[0].arn : var.custom_iam_role_arn
   handler          = "scheduler.main.lambda_handler"