i have a raspberry Pi Zero V.1. I have pymodbus installed but struggle to get the latest version. On pypi.org the latest version is 3.11.4. The version on my pi is 3.0.0-7

If i type

sudo apt install python3-pymodbus

i get the answer: python3-pymodbus is already the newest version (3.0.0-7)

Why does the pi reference an old version?