old_contents: from distutils.core import setup
  
  setup(name='TreasureDataFdw',
        version='0.0.1',
        description='A foreign data wrapper for TreasureData',
        author='Mitsunori Komatsu',
        author_email='komamitsu@gmail.com',
        url='https://github.com/komamitsu/td_fdw',
        install_requires=['td-client'],
        py_modules=['tdfdw'])
  
new_contents: from distutils.core import setup
  
  setup(name='TreasureDataFdw',
        version='0.0.1',
        description='A foreign data wrapper for TreasureData',
        author='Mitsunori Komatsu',
        author_email='komamitsu@gmail.com',
        url='https://github.com/komamitsu/td_fdw',
        install_requires=['td-client', 'certifi'],
        py_modules=['tdfdw'])
  
subject: Add 'certifi' into 'install_requires'