diff --git a/README.md b/README.md
index 17e6e91..e854a2f 100644
--- a/README.md
+++ b/README.md
@@ -183,6 +183,7 @@ The following are optional as `step.with` keys
 | `body_path`                | String  | Path to load text communicating notable changes in this release                                                                                                                                                                                                                                                                                                                                                                                 |
 | `draft`                    | Boolean | Indicator of whether or not this release is a draft                                                                                                                                                                                                                                                                                                                                                                                             |
 | `prerelease`               | Boolean | Indicator of whether or not is a prerelease                                                                                                                                                                                                                                                                                                                                                                                                     |
+| `preserve_order`           | Boolean | Indicator of whether order of files should be preserved when uploading assets                                                                                                                                                                                                                                                                                                                                                                   |
 | `files`                    | String  | Newline-delimited globs of paths to assets to upload for release                                                                                                                                                                                                                                                                                                                                                                                |
 | `name`                     | String  | Name of the release. defaults to tag name                                                                                                                                                                                                                                                                                                                                                                                                       |
 | `tag_name`                 | String  | Name of a tag. defaults to `github.ref`                                                                                                                                                                                                                                                                                                                                                                                                         |