cffi>=1.9.1
img2pdf<0.4,>=0.2.4
pikepdf<0.4,>=0.3.3
python-xmp-toolkit<3,>=2
reportlab>=3.3.0
ruffus>=2.7.0

[:sys_platform == "darwin"]
Pillow!=5.1.0,>=4.0.0

[fitz]
