diff --git a/agora-ext.md b/agora-ext.md
index 23a7e9a7a..5473ed1de 100644
--- a/agora-ext.md
+++ b/agora-ext.md
@@ -4,5 +4,6 @@
   - by [[vera]].
   - [[git]] https://gitlab.com/veracantcode/agora-ext
     - [[go]] [[git]] 
+  - [[firefox]] https://addons.mozilla.org/en-US/firefox/addon/agora/