I use it in python 3.12, and 3.12 just got out of bug fix. I haven't tried 3.13 but I would be surprised if there was a break. Most of it works through OmegaConf[0].

Idk why they haven't pushed an update in 2 years but neither has this been a problem. FWIW, they're still updating the repo[1]

[0] https://omegaconf.readthedocs.io

[1] https://github.com/facebookresearch/hydra