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@dependabot dependabot bot commented on behalf of github Dec 15, 2025

Updated Ical.Net from 5.1.2 to 5.1.4.

Release notes

Sourced from Ical.Net's releases.

5.1.4

Fix: Regression introduced in v5.1.3 affecting RRULE:FREQ=YEARLY when negative BYMONTHDAY or BYYEARDAY values are used. In certain combinations the evaluator could normalize negative positions incorrectly and skip valid occurrences (e.g., end‑of‑month or end‑of‑year instances). This has been fixed — please upgrade to v5.1.4.

Example of an affected rule (prior behavior could skip results):

DTSTART:20250101
RRULE:FREQ=YEARLY;BYYEARDAY=-1,1;BYMONTHDAY=-1,1

What's Changed

Full Changelog: ical-org/ical.net@v5.1.3...v5.1.4

5.1.3

What's Changed

  • Fix: Correct handling RRULE:FREQ=YEARLY combined with BYMONTH and BYWEEKNO. The previous implementation could skip occurrences in some scenarios.
  • Fix: Correct handling RRULE:FREQ=YEARLY when BYMONTH ist missing, e.g. RRULE:FREQ=YEARLY;INTERVAL=2;BYDAY=MO,TU. Now takes the month of DTSTART as a limiter. The previous implementation could show occurrences for wrong months.

Full Changelog: ical-org/ical.net@v5.1.2...v5.1.3

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---
updated-dependencies:
- dependency-name: Ical.Net
  dependency-version: 5.1.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file dotnet Pull requests that update .NET code labels Dec 15, 2025
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