diff --git a/config/schedule.yml b/config/schedule.yml
index 96e4cfc4f..4a264e587 100644
--- a/config/schedule.yml
+++ b/config/schedule.yml
@@ -33,12 +33,13 @@ remove_stale_redis_keys_job.rb:
   class: 'Internal::RemoveStaleRedisKeysJob'
   queue: scheduled_jobs
 
-#executed daily at 0430 UTC
-# which will be IST 10:00 AM
-process_stale_contacts_job:
-  cron: '30 04 * * *'
-  class: 'Internal::ProcessStaleContactsJob'
-  queue: housekeeping
+# DISABLED: investigating if this job is the source of orphan conversations
+# #executed daily at 0430 UTC
+# # which will be IST 10:00 AM
+# process_stale_contacts_job:
+#   cron: '30 04 * * *'
+#   class: 'Internal::ProcessStaleContactsJob'
+#   queue: housekeeping
 
 # executed daily at 0100 UTC
 # to delete accounts marked for deletion