diff --git a/README.md b/README.md
index 125ffa2..0465e05 100644
--- a/README.md
+++ b/README.md
@@ -17,10 +17,10 @@ It would be more useful to use this with other GitHub Actions' outputs.
 
 |      NAME      |                                           DESCRIPTION                                           |   TYPE   | REQUIRED |                                     DEFAULT                                     |
 | -------------- | ----------------------------------------------------------------------------------------------- | -------- | -------- | ------------------------------------------------------------------------------- |
-| `github_token` | A GitHub token.                                                                                 | `string` | `false`   | `${{ github.token }}`                                                                           |
-| `labels`       | The labels' name to be added. Must be separated with line breaks if there're multiple labels. | `string` | `true`   | `N/A`                                                                           |
-| `number`       | The number of the issue or pull request.                                                        | `number` | `false`  | `N/A`                                                                           |
-| `repo`         | The owner and repository name. e.g.) `Codertocat/Hello-World`                                   | `string` | `false`  | `${{ github.event.issue.number }}` or `${{ github.event.pull_request.number }}` |
+| `github_token` | A GitHub token.                                                                                 | `string` | `false`  | `${{ github.token }}`                                                           |
+| `labels`       | The labels' name to be added. Must be separated with line breaks if there're multiple labels.   | `string` | `true`   | `N/A`                                                                           |
+| `number`       | The number of the issue or pull request.                                                        | `number` | `false`  | `${{ github.event.issue.number }}` or `${{ github.event.pull_request.number }}` |
+| `repo`         | The owner and repository name. e.g.) `Codertocat/Hello-World`                                   | `string` | `false`  | `${{ github.repository }}`                                                      |
 
 ## Example