uvloop requires Python 3.7 or greater

I run

make install-dependencies

got error

Using cached https://pypi.tuna.tsinghua.edu.cn/packages/94/98/9dc814f391b2293ecc790b9752e005296c69c3694fd9975b6cb77c448135/uvloop-0.15.1.tar.gz (2.1 MB)
    ERROR: Command errored out with exit status 1:
     command: /usr/local/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-vyqk6yh_/uvloop_c614946825074c668a0d177f56547924/setup.py'"'"'; __file__='"'"'/tmp/pip-install-vyqk6yh_/uvloop_c614946825074c668a0d177f56547924/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-cphs3oa_
         cwd: /tmp/pip-install-vyqk6yh_/uvloop_c614946825074c668a0d177f56547924/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-vyqk6yh_/uvloop_c614946825074c668a0d177f56547924/setup.py", line 5, in <module>
        raise RuntimeError('uvloop requires Python 3.7 or greater')
    RuntimeError: uvloop requires Python 3.7 or greater
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.