You are using pip version 19.0.3, however version 19.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
Need to add commands to upgrade pip to latest version, but leave the rest of the requirements.txt the same.
Everytime pip is used, a warning:
Need to add commands to upgrade pip to latest version, but leave the rest of the requirements.txt the same.