diff --git a/src/service/sync/mod.rs b/src/service/sync/mod.rs
index 50228961..bc503683 100644
--- a/src/service/sync/mod.rs
+++ b/src/service/sync/mod.rs
@@ -22,6 +22,7 @@ pub struct Data {
 	userroomid_joined: Arc<Map>,
 	userroomid_invitestate: Arc<Map>,
 	userroomid_leftstate: Arc<Map>,
+	userroomid_knockedstate: Arc<Map>,
 	userroomid_notificationcount: Arc<Map>,
 	userroomid_highlightcount: Arc<Map>,
 	pduid_pdu: Arc<Map>,
@@ -58,6 +59,7 @@ impl crate::Service for Service {
 				userroomid_joined: args.db["userroomid_joined"].clone(),
 				userroomid_invitestate: args.db["userroomid_invitestate"].clone(),
 				userroomid_leftstate: args.db["userroomid_leftstate"].clone(),
+				userroomid_knockedstate: args.db["userroomid_knockedstate"].clone(),
 				userroomid_notificationcount: args.db["userroomid_notificationcount"].clone(),
 				userroomid_highlightcount: args.db["userroomid_highlightcount"].clone(),
 				pduid_pdu: args.db["pduid_pdu"].clone(),
diff --git a/src/service/sync/watch.rs b/src/service/sync/watch.rs
index ae40694d..433473ce 100644
--- a/src/service/sync/watch.rs
+++ b/src/service/sync/watch.rs
@@ -30,6 +30,10 @@ pub async fn watch(&self, user_id: &UserId, device_id: &DeviceId) -> Result {
 			.userroomid_leftstate
 			.watch_raw_prefix(&userid_prefix)
 			.boxed(),
+		self.db
+			.userroomid_knockedstate
+			.watch_raw_prefix(&userid_prefix)
+			.boxed(),
 		self.db
 			.userroomid_notificationcount
 			.watch_raw_prefix(&userid_prefix)