diff --git a/lib/livekit/access_token.rb b/lib/livekit/access_token.rb
index bd9ddd0..3398e36 100644
--- a/lib/livekit/access_token.rb
+++ b/lib/livekit/access_token.rb
@@ -35,6 +35,10 @@ def add_grant(video_grant)
       if video_grant.is_a?(Hash)
         video_grant = VideoGrant.from_hash(video_grant)
       end
+      self.set_video_grant(video_grant)
+    end
+
+    def set_video_grant(video_grant)
       @grants.video = video_grant
     end
 
@@ -42,6 +46,10 @@ def add_sip_grant(sip_grant)
       if sip_grant.is_a?(Hash)
         sip_grant = SIPGrant.from_hash(sip_grant)
       end
+      self.set_sip_grant(sip_grant)
+    end
+
+    def set_sip_grant(sip_grant)
       @grants.sip = sip_grant
     end
 
@@ -49,6 +57,10 @@ def metadata=(participant_md)
       @grants.metadata = participant_md
     end
 
+    def attributes=(participant_attributes)
+      @grants.attributes = participant_attributes
+    end
+
     def name=(participant_name)
       @grants.name = participant_name
     end