diff --git a/README.md b/README.md
index c8875252..73823aa6 100644
--- a/README.md
+++ b/README.md
@@ -294,7 +294,6 @@ API | Description | Auth | HTTPS | CORS |
 API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
 | [Abstract Public Holidays](https://www.abstractapi.com/holidays-api) | Data on national, regional, and religious holidays via API | `apiKey` | Yes | Yes |
-| [Calendar Index](https://www.calendarindex.com/) | Worldwide Holidays and Working Days | `apiKey` | Yes | Yes |
 | [Calendarific](https://calendarific.com/) | Worldwide Holidays | `apiKey` | Yes | Unknown |
 | [Church Calendar](http://calapi.inadiutorium.cz/) | Catholic liturgical calendar | No | No | Unknown |
 | [Czech Namedays Calendar](https://svatky.adresa.info) | Lookup for a name and returns nameday date | No | No | Unknown |