diff --git a/ATTRIBUTION.md b/ATTRIBUTION.md
index 45f51cd7..3e4ef078 100644
--- a/ATTRIBUTION.md
+++ b/ATTRIBUTION.md
@@ -7,5 +7,6 @@ This project is licensed under the permissive ISC license. Parts imported from o
 - [`leaflet_google.js` by Pavel Shramov; same as Leaftlet](https://github.com/shramov/leaflet-plugins) (modified, though)
 - [jquery.qrcode.js by Jerome Etienne; MIT](https://github.com/jeromeetienne/jquery-qrcode)
 - [oms.min.js by George MacKerron; MIT](https://github.com/jawj/OverlappingMarkerSpiderfier-Leaflet)
+- [taphold.js by Rich Adams; unknown](https://github.com/richadams/jquery-taphold)
 - StackOverflow-CopyPasta is attributed in the source; [CC-Wiki](https://creativecommons.org/licenses/by-sa/3.0/)
 - all Ingress/Niantic related stuff obviously remains non-free and is still copyrighted by Niantic/Google