diff --git a/README.md b/README.md
index 9eb6b15..7148b61 100644
--- a/README.md
+++ b/README.md
@@ -1400,7 +1400,7 @@
 ### Science & Math
 | API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
-| [arcsecond.io](https://api.arcsecond.io/) | Multiple astronomy data sources | No | Yes | Unknown |
+| [arcsecond.io](https://api.arcsecond.io/) | Multiple astronomy data sources | `apiKey` | Yes | Unknown |
 | [arXiv](https://arxiv.org/help/api/user-manual) | Curated research-sharing platform: physics, mathematics, quantitative finance, and economics | No | Yes | Unknown |
 | [CORE](https://core.ac.uk/services#api) | Access the world's Open Access research papers | `apiKey` | Yes | Unknown |
 | [GBIF](https://www.gbif.org/developer/summary) | Global Biodiversity Information Facility | No | Yes | Yes |
diff --git a/db/resources.json b/db/resources.json
index b4a4a6d..8832a6f 100644
--- a/db/resources.json
+++ b/db/resources.json
@@ -9472,7 +9472,7 @@
     {
         "API": "arcsecond.io",
         "Description": "Multiple astronomy data sources",
-        "Auth": "",
+        "Auth": "apiKey",
         "HTTPS": true,
         "Cors": "unknown",
         "Link": "https://api.arcsecond.io/",