Install pip for Python 3

When I type python3 --version in terminal it shows Python 3.6.0.

When I type in pip --version it shows

pip 9.0.1 from /Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg (python 2.7)

How do I get it from Python/2.7 to Python/3.6?