diff --git a/auth/grants.go b/auth/grants.go
index 8d8872a..94b2b37 100644
--- a/auth/grants.go
+++ b/auth/grants.go
@@ -14,6 +14,9 @@ type VideoGrant struct {
 	// it's interpreted as both are permissible
 	CanPublish   bool `json:"canPublish,omitempty"`
 	CanSubscribe bool `json:"canSubscribe,omitempty"`
+
+	// used for recording
+	Hidden bool `json:"hidden,omitempty"`
 }
 
 type ClaimGrants struct {
diff --git a/livekit_models.proto b/livekit_models.proto
index a211b22..17811ee 100644
--- a/livekit_models.proto
+++ b/livekit_models.proto
@@ -36,6 +36,8 @@ message ParticipantInfo {
   string metadata = 5;
   // timestamp when participant joined room
   int64 joined_at = 6;
+  // hidden participant (used for recording)
+  bool hidden = 7;
 }
 
 enum TrackType {