psycopg >if any of the packages didn' install on your systemadd those as well when you're finishedyour requirements txt file should include each of the packages shown above if package is listed on your system but the version number differs from what' shown herekeep the version you have on your system note if you're using windowsmake sure your version of requirements txt matches the list shown here regardless of which packages you were able to install on your system specifying the python runtime unless you specify python versionheroku will use its own current default version of python let' make sure heroku uses the same version of python we're using in an active virtual environmentissue the command python --version(ll_env)learning_logpython --version python in this example ' running python make new file called runtime txt in the same directory as manage pyand enter the followingruntime txt pythonthis file should contain one line with your python version specified in the format shownmake sure you enter python in lowercasefollowed by hyphenfollowed by the three-part version number note if you get an error reporting that the python runtime you requested is not availablego to specifying python runtime scan through the article to find the available runtimesand use the one that most closely matches your python version modifying settings py for heroku now we need to add section at the end of settings py to define some settings specifically for the heroku environmentsettings py --snip-settings for django-bootstrap bootstrap 'include_jquery'true