diff --git a/README.md b/README.md
index 769c35a..6932041 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ mirrored on [GitHub](https://github.com/scsibug/nostr-rs-relay).
 - [x] NIP-20: [Command Results](https://github.com/nostr-protocol/nips/blob/master/20.md)
 - [x] NIP-22: [Event `created_at` limits](https://github.com/nostr-protocol/nips/blob/master/22.md) (_future-dated events only_)
 - [x] NIP-26: [Event Delegation](https://github.com/nostr-protocol/nips/blob/master/26.md)
+- [x] NIP-28: [Public Chat](https://github.com/nostr-protocol/nips/blob/master/28.md)
 
 ## Quick Start
 
diff --git a/src/db.rs b/src/db.rs
index a224231..c9e95c1 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -399,7 +399,7 @@ pub fn write_event(conn: &mut PooledConnection, e: &Event) -> Result<usize> {
     // if this event is replaceable update, hide every other replaceable
     // event with the same kind from the same author that was issued
     // earlier than this.
-    if e.kind == 0 || e.kind == 3 || (e.kind >= 10000 && e.kind < 20000) {
+    if e.kind == 0 || e.kind == 3 || e.kind == 41 || (e.kind >= 10000 && e.kind < 20000) {
         let update_count = tx.execute(
             "UPDATE event SET hidden=TRUE WHERE id!=? AND kind=? AND author=? AND created_at <= ? and hidden!=TRUE",
             params![ev_id, e.kind, hex::decode(&e.pubkey).ok(), e.created_at],
diff --git a/src/event.rs b/src/event.rs
index f443ef0..0fc938d 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -101,7 +101,6 @@ impl From<EventCmd> for Result<Event> {
 }
 
 impl Event {
-
     #[cfg(test)]
     pub fn simple_event() -> Event {
         Event {