diff --git a/29.md b/29.md
index d3acd6a068..bc1579d6de 100644
--- a/29.md
+++ b/29.md
@@ -152,6 +152,7 @@ If the group is forked and hosted in multiple relays, there will be multiple ver
     ["d", "<group-id>"],
     ["name", "Pizza Lovers"],
     ["picture", "https://pizza.com/pizza.png"],
+    ["banner", "https://pizza.com/banner.png"],
     ["about", "a group for people who love pizza"],
     ["private"],
     ["closed"],
@@ -161,7 +162,7 @@ If the group is forked and hosted in multiple relays, there will be multiple ver
 }
 ```
 
-- `name`, `picture` and `about` are basic metadata for the group for display purposes.
+- `name`, `picture`, `banner` and `about` are basic metadata for the group for display purposes.
 - `private` indicates that only members can _read_ group messages. Omitting this tag indicates that anyone can read group messages.
 - `restricted` indicates that only members can _write_ messages to the group. Omitting this tag indicates that anyone can send messages to the group.
 - `hidden` indicates that relays should hide group metadata from non-members. Omitting this tag indicates that anyone can request group metadata events.