diff --git a/programming/airflow/dags/demo.py b/programming/airflow/dags/demo.py
index 628936c..0238ee8 100644
--- a/programming/airflow/dags/demo.py
+++ b/programming/airflow/dags/demo.py
@@ -34,3 +34,4 @@ def save_time_stamp():
                            python_callable=save_time_stamp,
                            dag=dag)
 
+copy_files_task >> write_log
\ No newline at end of file