diff --git a/lib/livekit/agent_dispatch_service_client.rb b/lib/livekit/agent_dispatch_service_client.rb
index d696d6b..2c0c51e 100644
--- a/lib/livekit/agent_dispatch_service_client.rb
+++ b/lib/livekit/agent_dispatch_service_client.rb
@@ -53,7 +53,7 @@ def delete_dispatch(dispatch_id, room_name)
       self.rpc(
         :DeleteDispatch,
         request,
-        headers: auth_header(VideoGrant.new(roomAdmin: true, room: room_name)),
+        headers: auth_header(video_grant: VideoGrant.new(roomAdmin: true, room: room_name)),
       )
     end
 
@@ -69,10 +69,10 @@ def get_dispatch(dispatch_id, room_name)
       res = self.rpc(
         :ListDispatch,
         request,
-        headers: auth_header(VideoGrant.new(roomAdmin: true, room: room_name)),
+        headers: auth_header(video_grant: VideoGrant.new(roomAdmin: true, room: room_name)),
       )
-      if res.agent_dispatches.size > 0
-        return res.agent_dispatches[0]
+      if res.data.agent_dispatches.size > 0
+        return res.data.agent_dispatches[0]
       end
       nil
     end
@@ -87,9 +87,9 @@ def list_dispatch(room_name)
       res = self.rpc(
         :ListDispatch,
         request,
-        headers: auth_header(VideoGrant.new(roomAdmin: true, room: room_name)),
+        headers: auth_header(video_grant: VideoGrant.new(roomAdmin: true, room: room_name)),
       )
-      res.agent_dispatches
+      res.data.agent_dispatches
     end
   end
 end