heroku application still referencing old files after push

Try heroku restart to force a restart of all the dynos. I'm not positive but I've seen indications like this that they tend to "lazy restart" the dynos and workers after a push. If you want to guarantee all workers and dynos are working off the latest pushed code, do a restart after your push.

I know this is old, but I just recently had this problem, turned out it was just my cache. If you hit ctrl + F5 it hard refreshes the page and the cache. Worked in my case after searching everywhere.

Experienced same problem too, so checked the repo files by running heroku git:clone -a my-app cloned the files currently in heroku master, and confirmed that the files in repo are the updated version. Hence, the newer files are uploaded correctly but is not being reflected by heroku. Hence I ran heroku restart and waited a long time, like 3 or 4 hours, and problem solved, heroku started running the new files.

Not exactly sure if heroku restart or simply waiting for 4 hours solved the problem, and I doubt I needed to wait 4 hours for heroku to reflect newer repo.

However, I think, after deploying to the same master branch git push heroku master, heroku needs some time to reflect the newer files, hence the switch to newer files will not be instant, it takes time.

Hope this helps anyone else experiencing the same problem.