Description
The problem
2 of my 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?
Core-2025.4. 3
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
No response
Example YAML snippet
Anything in the logs that might be useful for us?
AttributeError: module 'icalendar' has no attribute 'Calendar'Additional information
No response
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