1--- ./setup.py 2018-07-30 15:40:14.000000000 +0000
2+++ ./setup.py 2019-02-12 18:33:24.984430303 +0000
3@@ -17,7 +17,7 @@
4 packages=['contextvars'],
5 provides=['contextvars'],
6 install_requires=[
7- 'immutables==0.6',
8+ 'immutables>=0.6',
9 ],
10 license='Apache License, Version 2.0',
11 classifiers=[