If you see a message like this during one of your heroku builds/pushes, here’s what you should do:
remote: -----> Python app detected remote: ! Python has released a security update! Please consider upgrading to python-3.7.7
Take a look at what your runtime.txt file looks like. Mine looks like:
$ more runtime.txt python-3.7.6
So, fire up your favorite editor and make it match.
Then commit that file, and push it back up to your repo and heroku.
$ git push heroku master Counting objects: 3, done. Delta compression using up to 8 threads. Compressing objects: 100% (2/2), done. Writing objects: 100% (3/3), 300 bytes | 12.00 KiB/s, done. Total 3 (delta 1), reused 0 (delta 0) remote: Compressing source files... done. remote: Building source: remote: remote: -----> Python app detected remote: -----> Found python-3.7.6, removing remote: -----> No change in requirements detected, installing from cache remote: -----> Installing python-3.7.7 remote: -----> Installing pip remote: -----> Installing dependencies with Pipenv 2018.5.18… remote: Installing dependencies from Pipfile.lock (a33c91)…