gym conflict with mujoco-py

[milong26]

when i run pip install -r requirements.txt, it shows

ERROR: Cannot install gym[all]==0.15.7 and mujoco-py==2.0.2.9 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested mujoco-py==2.0.2.9
    gym[all] 0.15.7 depends on mujoco-py<2.0 and >=1.50; extra == "all"

Is this caused by the requirement or just my gcc and linux version? I'm using ubuntu 22.04 and gcc -v Ubuntu 7.5.0-3ubuntu1~18.04.
Can anyone tell me which version should I use?thanks!