# Core dependencies
caldav>=1.3.0,<2.0.0
icalendar>=5.0.0,<6.0.0
pyyaml>=6.0,<7.0
python-dateutil>=2.8.0,<3.0.0

# Security: Updated to fix CVE-2023-32681
requests>=2.31.0,<3.0.0

# Secure credential storage
keyring>=24.0.0,<25.0.0

# Timezone support (Python 3.9+, backport for 3.8)
backports.zoneinfo>=0.2.1,<1.0.0; python_version < "3.9"
