diff --git a/README.md b/README.md
index cb5f9f2e97c..82b570441a7 100644
--- a/README.md
+++ b/README.md
@@ -147,7 +147,7 @@ Support this project with a :star:
| quotepath | `boolean` | `false` | `true` | Output filenames completely verbatim by setting this to `false` |
| diff\_relative | `boolean` | `false` | | Exclude changes outside the current directory and show pathnames relative to it. |
| dir\_names | `boolean` | `false` | `false` | Output unique changed directories instead of filenames.
NOTE: This returns `.` for
changed files located in the root of the project. |
-| json | `boolean` | `false` | `false` | Output changed files in JSON format which can be used for matrix jobs. |
+| json | `boolean` | `false` | `false` | Output changed files in JSON format which can be used for [matrix jobs](https://github.com/tj-actions/changed-files/blob/main/.github/workflows/manual-matrix-test.yml). |
| since | `string` | `false` | | Get changed files for commits whose timestamp is older than the given time. |
| until | `string` | `false` | | Get changed files for commits whose timestamp is earlier than the given time. |