diff --git a/README.md b/README.md
index b029221c..dca0a408 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,7 @@ Using the default separator.
 |   Output             |    type      |  example                       |         description                      |
 |:-------------------:|:------------:|:------------------------------:|:----------------------------------------:|
 | all_modified_files   |  `string`    |    'new.txt other.png ...'     |  Select all modified files <br /> *i.e a combination of all added, <br />copied and modified files (ACM).*  |
+| has_changed          |  `string`     |     `true|false`             |  Returns `true` only when the filenames provided using `files` input have all changed |
 | all_changed_files   |  `string`    |    'new.txt other.png ...'     |  Select all paths (*) <br /> *i.e a combination of all options below.*  |
 | added_files         |  `string`    |    'new.txt other.png ...'     |  Select only files that are Added (A)    |
 | copied_files        |  `string`    |    'new.txt other.png ...'     |  Select only files that are Copied (C)   |