[build-system]
requires = [
    "wheel",
    "setuptools",
    "Cython>=0.29.2",
    "numpy==1.13.3; python_version=='3.5'",
    "numpy==1.13.3; python_version=='3.6'",
    "numpy==1.14.5; python_version>='3.7'",
    "pybind11>=2.2.4",
]

[build-system]
requires = [
    "wheel",
    "setuptools",
    "Cython>=0.29.2",
    "numpy==1.13.3; python_version=='3.5' and platform_system!='AIX'",
    "numpy==1.13.3; python_version=='3.6' and platform_system!='AIX'",
    "numpy==1.14.5; python_version>='3.7' and platform_system!='AIX'",
    "numpy==1.16.0; python_version=='3.5' and platform_system=='AIX'",
    "numpy==1.16.0; python_version=='3.6' and platform_system=='AIX'",
    "numpy==1.16.0; python_version>='3.7' and platform_system=='AIX'",
    "pybind11>=2.2.4",
]

Update numpy version for AIX
Update numpy version for AIX
