diff --git a/scheduler.py b/scheduler.py
index 506f13baf..1b806c590 100644
--- a/scheduler.py
+++ b/scheduler.py
@@ -5,7 +5,7 @@ from get_subtitle import *
 from apscheduler.schedulers.background import BackgroundScheduler
 
 scheduler = BackgroundScheduler()
-scheduler.add_job(update_series, 'interval', minutes=1, id='update_series', name='Update series list from Sonarr')
-scheduler.add_job(add_new_episodes, 'interval', minutes=1, id='add_new_episodes', name='Add new episodes from Sonarr')
-scheduler.add_job(wanted_search_missing_subtitles, 'interval', minutes=15, id='wanted_search_missing_subtitles', name='Search for wanted subtitles')
+scheduler.add_job(update_series, 'interval', minutes=1, max_instances=1, coalesce=True, id='update_series', name='Update series list from Sonarr')
+scheduler.add_job(add_new_episodes, 'interval', minutes=1, max_instances=1, coalesce=True, id='add_new_episodes', name='Add new episodes from Sonarr')
+scheduler.add_job(wanted_search_missing_subtitles, 'interval', minutes=15, max_instances=1, coalesce=True, id='wanted_search_missing_subtitles', name='Search for wanted subtitles')
 scheduler.start()