Airflow UI doesn't update new dags

Hi team, I am working with airflow, I add new dags and they are not updating in airflow, this happens even before, please how to solve this.

Thank you

Can you describe how you are running Airflow and how you’re adding new DAGs? New DAGs that are added to the dags folder (usually $AIRFLOW_HOME/dags) will be parsed within a few minutes and either show up as a DAG or an import error.