diff --git a/172.md b/172.md
index 123eaef..84a88c9 100644
--- a/172.md
+++ b/172.md
@@ -59,7 +59,7 @@ Community management clients MAY filter all mentions to a given `kind:34550` eve
 
 # Post Approval by moderators
 
-The post-approval event SHOULD include a stringified `new post request` event inside the `.content` of the approval ([NIP-18-style](18.md)).
+The post-approval event MUST include `a` tags of the communities the moderator is posting into (one or more), the `e` tag of the post and `p` tag of the author of the post (for approval notificaitons). The event SHOULD also include the stringified `post request` event inside the `.content` ([NIP-18-style](18.md)) and a `k` tag with the original post's event kind to allow filtering of approved posts by kind.
 
 ```js
 {