diff --git a/actioncable/CHANGELOG.md b/actioncable/CHANGELOG.md
index 4f17274a01..7657a05077 100644
--- a/actioncable/CHANGELOG.md
+++ b/actioncable/CHANGELOG.md
@@ -1,3 +1,9 @@
+*   Redis subscription adapters now support `channel_prefix` option in `cable.yml`
+
+    Avoids channel name collisions when multiple apps use the same Redis server.
+
+    *Chad Ingram*
+
 *   Permit same-origin connections by default.
 
     Added new option `config.action_cable.allow_same_origin_as_host = false`