diff --git a/README.md b/README.md
index b650c11eacef2..e0d511cc389c7 100644
--- a/README.md
+++ b/README.md
@@ -127,7 +127,9 @@ You can install the latest version [manually](https://github.com/gorhill/uBlock/
 
 #### Firefox / Firefox for Android
 
-[Firefox Add-ons web site](https://addons.mozilla.org/firefox/addon/ublock-origin/). There is also a development version if you want to test uBlock Origin with the latest changes: see [_uBlock Origin Version History_](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/versions/)
+[Firefox Add-ons web site](https://addons.mozilla.org/addon/ublock-origin/). There is also a development version if you want to test uBlock Origin with the latest changes: see [_uBlock Origin Version History_](https://addons.mozilla.org/addon/ublock-origin/versions/beta)
+
+uBlock Origin is compatible with SeaMonkey, Pale Moon and possibly other browsers based on Firefox.
 
 The Firefox version of uBlock Origin has [an extra feature](https://github.com/gorhill/uBlock/wiki/Inline-script-tag-filtering) currently not yet available on Chromium-based browsers -- which feature is of great help to foil attempts by many web sites to circumvent blockers.