Heroku Labs: Bypass Daily Dyno Restarts for Fir-Generation Apps
Last updated April 09, 2025
By default, dynos restart daily. Fir-generation apps have the option to skip this behavior, giving you more control over when dynos restart.
Use this feature to limit restarts to manual restarts or automatic restarts triggered by [events that you control]dyno-restarts#automatic-restarts), like a new release. Dynos still automatically restart if the dyno manager detects a fault in the underlying infrastructure.
Enabling
To enable the flag, run this command:
heroku labs:enable fir-bypass-daily-dyno-restarts -a example-app`
Disabling
To disable the flag and revert back to the default daily restart behavior, run:
heroku labs:disable fir-bypass-daily-dyno-restarts -a example-app`