diff --git a/files/en-us/mozilla/firefox/releases/138/index.md b/files/en-us/mozilla/firefox/releases/138/index.md
index 6c740e34742a1a8..b7d145d2507ab16 100644
--- a/files/en-us/mozilla/firefox/releases/138/index.md
+++ b/files/en-us/mozilla/firefox/releases/138/index.md
@@ -58,6 +58,8 @@ This article provides information about the changes in Firefox 138 that affect d
 
 ## Changes for add-on developers
 
+- The {{WebExtAPIRef("contextualIdentities")}} API is no longer defined in Firefox for Android. Previously, it was defined but defective. ([Firefox bug 1659500](https://bugzil.la/1659500))
+- The `contextualIdentities` permission is now not recognized on Firefox for Android. Previously, it enabled a broken version of the "containers" feature. ([Firefox bug 1659500](https://bugzil.la/1659500))
 - The new Manifest V3 version of the {{WebExtAPIRef("userScripts")}} API is now available on Firefox for Android. ([Firefox bug 1949955](https://bugzil.la/1949955))
 
 ### Removals