diff --git a/README.md b/README.md
index 5f6a28b..dc9434a 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ use
 | -------------------- | ------- | ------------- | -------- | --------------------- | ------------ | ------------- | --------------------- | ------ |
 | Language             | Rust    | Ruby          | Go       | JS                    | TypeScript   | Python        | JS                    | PHP    |
 | Async/Parallel       | ![yes]  | ![yes]        | ![yes]   | ![yes]                | ![yes]       | ![yes]        | ![yes]                | ![yes] |
+| JSON output | ![yes] | ![no] | ![yes] | ![yes] | ![yes] | ![maybe]<sup>1</sup> | ![yes] | ![yes] |
 | Static binary        | ![yes]  | ![no]         | ![yes]   | ![no]                 | ![no]        | ️ ![no]       | ![no]                 | ![no]  |
 | Markdown files       | ![yes]  | ![yes]        | ![no]    | ![no]                 | ![no]        | ![yes]        | ️ ![yes]              | ![no]  |
 | HTML files           | ![yes]  | ![no]         | ![no]    | ![yes]                | ![yes]       | ![no]         | ![yes]                 | ![no]  |
@@ -64,6 +65,8 @@ use
 [skip private domains]: https://github.com/appscodelabs/liche/blob/a5102b0bf90203b467a4f3b4597d22cd83d94f99/url_checker.go
 [use as library]: https://github.com/raviqqe/liche/issues/13
 
+<sup>1</sup> Other machine-readable formats like CSV are supported.
+
 ## Contributing to lychee
 
 We'd be thankful for any contribution. \