Why doesn't tensorflow update to 2.7?

Question

linux

When trying to import project modules into a jupyter notebook, it returns an error during the import phase:
from causalimpact import CausalImpact
The version of CausalImpact is as follows: https://pypi.org/project/pycausalimpact/

It returns the following error:
ImportError: This version of TensorFlow Probability requires TensorFlow version >= 2.7; Detected an installation of version 2.6.2. Please upgrade TensorFlow to proceed.

When explicitly trying to upgrade via pip3 install tensorflow --upgrade, it reaches the latest available version 2.6.2

Moreover, the same project from another user starts normally, although the version of the tensorflow library is also 2.6.2 on it

Python version 3.6.8

Answer 1

pip install tensorflow==2.7.0
https://pypi.org/project/tensorflow/#history

Answer 2

Why doesn't tensorflow update to 2.7?

Python version 3.6.8

That's why.