If there are any new updates, you can update WordPress by changing the version number in the file composer.json.
"require": { ... "johnpbloch/wordpress": "4.7.2", ... }
You need to run composer to update the composer.lock with your new changes from the composer.json.
$ composer update
For more information about composer visit this link.
Please remember to commit your changes to git and push your changes to heroku.
$ git add composer.json composer.lock $ git commit -m "WordPress updated to version 4.7.x" $ git push heroku master
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