conflicting requirements in requirements.txt

[MohamedA95]

hi, I am installing open edx manually using this tut . while executing pip install -r requirements.txt i get the following warning docker-compose 1.9.0 has requirement requests!=2.11.0,<2.12,>=2.6.1, but you'll have requests 2.18.4 which is incompatible. The requrements has an entry for requests==2.18.4 which is conflicting with docker-compose requirement. which version is safer to install ??