diff --git a/event_camera_simulator/esim_data_provider/include/esim/data_provider/data_provider_rosbag.hpp b/event_camera_simulator/esim_data_provider/include/esim/data_provider/data_provider_rosbag.hpp
index a545309..9f8efb3 100644
--- a/event_camera_simulator/esim_data_provider/include/esim/data_provider/data_provider_rosbag.hpp
+++ b/event_camera_simulator/esim_data_provider/include/esim/data_provider/data_provider_rosbag.hpp
@@ -1,3 +1,4 @@
+// This file was adapted from the ze_oss project: https://github.com/zurich-eye/ze_oss/blob/master/ze_data_provider/include/ze/data_provider/data_provider_rosbag.hpp
 // Copyright (C) ETH Zurich, Wyss Zurich, Zurich Eye - All Rights Reserved
 
 #pragma once