Description
The problem
2 of my iCloud calendars, one of which is a family calendar after installing the latest round of updates to HA and AppDaemon.
Logs show the error: AttributeError: module 'icalendar' has no attribute 'Calendar'
What version of Home Assistant Core has the issue?
core-2025.5.3
What was the last working version of Home Assistant Core?
No response
What type of installation are you running?
Home Assistant OS
Integration causing the issue
caldav
Link to integration documentation on our website
https://www.home-assistant.io/integrations/caldav/
Diagnostics information
Calendars are no longer synchronising - showing as Unavailable in HA
Example YAML snippet
Anything in the logs that might be useful for us?
AttributeError: module 'icalendar' has no attribute 'Calendar'Additional information
No response