diff --git a/README.md b/README.md
index d4d25b42..8745963c 100644
--- a/README.md
+++ b/README.md
@@ -1049,6 +1049,7 @@ API | Description | Auth | HTTPS | CORS |
 | [INEI](http://iinei.inei.gob.pe/microdatos/) | Peruvian Statistical Government Open Data | No | No | Unknown |
 | [Interpol Red Notices](https://interpol.api.bund.dev/) | Access and search Interpol Red Notices | No | Yes | Unknown |
 | [Istanbul (İBB) Open Data](https://data.ibb.gov.tr) | Data sets from the İstanbul Metropolitan Municipality (İBB) | No | Yes | Unknown |
+| [National Park Service, US](https://www.nps.gov/subjects/developer/) | Data from the US National Park Service | `apiKey` | Yes | Yes |
 | [Open Government, ACT](https://www.data.act.gov.au/) | Australian Capital Territory Open Data | No | Yes | Unknown |
 | [Open Government, Argentina](https://datos.gob.ar/) | Argentina Government Open Data | No | Yes | Unknown |
 | [Open Government, Australia](https://www.data.gov.au/) | Australian Government Open Data | No | Yes | Unknown |