diff --git a/doc/specs/lichess-api.yaml b/doc/specs/lichess-api.yaml
index e37b2246..4472bace 100644
--- a/doc/specs/lichess-api.yaml
+++ b/doc/specs/lichess-api.yaml
@@ -91,7 +91,7 @@ info:
     - [PyChess](https://github.com/gbtami/pychess-variants) ([source code](https://github.com/gbtami/pychess-variants))
     - [Lichess4545](https://www.lichess4545.com/) ([source code](https://github.com/cyanfish/heltour))
     - [English Chess Federation](https://ecf.octoknight.com/)
-    - [Rotherham Online Chess](https://rotherhamonlinechess.azurewebsites.net/tournaments)
+    - [mktour](https://mktour.org) ([source code](https://github.com/mkeverything/mktour))
 
     ### Token format
     Access tokens and authorization codes match `^[A-Za-z0-9_]+$`.