diff --git a/files/en-us/mozilla/firefox/releases/139/index.md b/files/en-us/mozilla/firefox/releases/139/index.md
index feaa6575caa4f12..34b182dc8fccb3f 100644
--- a/files/en-us/mozilla/firefox/releases/139/index.md
+++ b/files/en-us/mozilla/firefox/releases/139/index.md
@@ -50,6 +50,10 @@ This article provides information about the changes in Firefox 139 that affect d
 
 #### Removals
 
+- The experimental `<discard>` element has been removed, along with its corresponding {{domxref("SVGDiscardElement")}} JavaScript interface.
+  These aren't supported in other browsers and are expected to be removed from the specification.
+  ([Firefox bug 1958839](https://bugzil.la/1958839)).
+
 ### HTTP
 
 #### Removals