diff --git a/terraform/modules.tf b/terraform/modules.tf
index 3efb42b..f5e54d1 100644
--- a/terraform/modules.tf
+++ b/terraform/modules.tf
@@ -264,6 +264,6 @@ module "email_attachment_saver" {
   source                = "../lambdas/email_attachment_saver"
   lambda_storage_bucket = aws_s3_bucket.lambda_storage.id
   aws_region            = var.aws_region
-  allowed_s3_resources  = [module.s3_bucket.s3_bucket_arn]
+  allowed_s3_resources  = ["${module.s3_bucket.s3_bucket_arn}/*"]
 }