**Steps to reproduce**
# run `python3 /shared/pywikibot/core/pwb.py add_text`
**Expected behavior**
It should correctly run the script.
**Current behavior**
Toolforge bots using Pywikibot master (instead of stable, silly) does not work currently.
```
(requests 2.12.4 (/usr/lib/python3/dist-packages), Requirement.parse('requests>=2.20.1; python_version != "3.4"'))
Please install/update required module with:
pip install "requests>=2.20.1"
```
**Further details**
It seems Toolforge chose default Debian requests over Wikimedia one:
```
$ apt-cache policy python3-requests
python3-requests:
Installed: 2.12.4-1
Candidate: 2.12.4-1
Version table:
2.21.0-1~bpo9+1 100
100 http://mirrors.wikimedia.org/debian stretch-backports/main amd64 Packages
*** 2.12.4-1 500
500 http://deb.debian.org/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status
```
Not sure how to fix this.