Flask dependency error

[ahmetzyanov]

I was trying to clone and test the project but faced with errors on dependencies installation:

pip install -r .\requirements.txt
Collecting attrs==19.1.0
  Using cached attrs-19.1.0-py2.py3-none-any.whl (35 kB)
Collecting bintrees==2.0.7
  Using cached bintrees-2.0.7-cp36-cp36m-win_amd64.whl (59 kB)
Collecting cbpro==1.1.4
  Using cached cbpro-1.1.4-py2.py3-none-any.whl (35 kB)
Collecting certifi==2023.7.22
  Using cached certifi-2023.7.22-py3-none-any.whl (158 kB)
Collecting chardet==3.0.4
  Using cached chardet-3.0.4-py2.py3-none-any.whl (133 kB)
Collecting click==6.7
  Using cached click-6.7-py2.py3-none-any.whl (71 kB)
Collecting dash==0.30.0
  Using cached dash-0.30.0-py3-none-any.whl
Collecting dash-core-components==0.38.0
  Using cached dash_core_components-0.38.0-py3-none-any.whl
Collecting dash-html-components==0.13.2
  Using cached dash_html_components-0.13.2-py3-none-any.whl
Collecting dash-renderer==0.15.0
  Using cached dash_renderer-0.15.0-py3-none-any.whl
Collecting dash-table==3.6.0
  Using cached dash_table-3.6.0-py3-none-any.whl
Collecting DateTime==4.3
  Using cached DateTime-4.3-py2.py3-none-any.whl (60 kB)
Collecting decorator==4.2.1
  Using cached decorator-4.2.1-py2.py3-none-any.whl (9.3 kB)
ERROR: Could not find a version that satisfies the requirement Flask==2.3.2 (from versions: 0.1, 0.2, 0.3, 0.3.1, 0.4, 0.5, 0.5.1, 0.5.2, 0.6, 0.6.1, 0.7, 0.7.1, 0.7.2, 0.8, 0.8.1, 0.9, 0.10, 0.10.1, 0.11, 0.11.1, 0.12, 0.12.1, 0.12.2, 0.12.3, 0.12.4, 0.12.5, 
1.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 2.0.0rc1, 2.0.0rc2, 2.0.0, 2.0.1, 2.0.2, 2.0.3)
ERROR: No matching distribution found for Flask==2.3.2
WARNING: You are using pip version 21.3.1; however, version 23.2.1 is available.
You should consider upgrading via the 'C:\Users\gogla\PycharmProjects\crypto-whale-watching-app\venv\Scripts\python.exe -m pip install --upgrade pip' command.

My setup is:
Windows 10
Python 3.6.8 (as said in Readme)

Is project moved to newer version of Python? I've tried python 3.8 and also struggled with it