attrs>=21.2.0
cachetools>=5.5.0
certifi
# Prefer httpx2 (Python >=3.10); older Pythons stay on httpx.
# Authlib gained httpx2 support in 1.8.0, so require it where httpx is absent.
httpx>=0.26; python_version < "3.10"
httpx2>=2.0; python_version >= "3.10"
authlib>=1.0.0; python_version < "3.10"
authlib>=1.8.0; python_version >= "3.10"
