diff --git a/README.md b/README.md
index af865dc5..3da5b426 100644
--- a/README.md
+++ b/README.md
@@ -107,5 +107,6 @@ This project is licensed under the permissive ISC license. Parts imported from o
 - [leaflet.draw.js; by jacobtoye; MIT](https://github.com/Leaflet/Leaflet.draw)
 - [`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)
 - 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