$ heroku rollback v40
v40 部分は戻したい部分を
$ heroku releases
で確認した数字（v32 とか v50 とか）を入れる。
More than 5 years have passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme