Home / PRODUCTIVITY / Cal.com / v5.4.9
Cal.com v5.4.9stable Released Jun 27, 2025
⚠️ Breaking Change Impact Score: 7/10

Cal.com v5.4.9 — Release Notes & Engineering Impact

Source available — automated, not human-reviewed

Component: calcom · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Breaking-change evidence from the source

  • fix: EventAvailabilityTab atom breaking by @SomayChauhan in https://github.com/calcom/cal.com/pull/22059
Read the original context ↗
Source flags breaking changes — review applicability
📄 .MD
✨ Features 2 ⚡ Improvements 1 🔧 Bug Fixes 6 ⚠️ Breaking & Deprecations 1
⚡ Executive Summary (TL;DR)

Cal.com v5.4.9. Source highlight: fix: show icon button when one item in array

Visit Cal.com Official Site ↗ Official Release Source ↗ All Cal.com Releases 📡 Cal.com RSS
Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

⚠️ Breaking Changes & Deprecations (1)

  • fix: EventAvailabilityTab atom breaking by @SomayChauhan in https://github.com/calcom/cal.com/pull/22059

✨ New Features & Capabilities (2)

  • feat: Add `rerouting` to `AssignmentReasonRecorder`
  • feat: Phone based bookings for everyone (#21320)

⚡ Performance & Enhancements (1)

  • perf: optimize slot conflict checking from O(n²) to O(n log n)

🔧 Bug Fixes & Patches (6)

  • fix: show icon button when one item in array
  • fix: changesets atoms release
  • fix: add InsightsRoutingService and refactor InsightsBookingRepository
  • fix: add avatar shapes to docs
  • fix: no available users found (recurring events)
  • fix: EventAvailabilityTab atom breaking
📄 View Raw Release Notes (Original Developer Log)
## What's Changed * fix: show icon button when one item in array by @sean-brydon in https://github.com/calcom/cal.com/pull/22054 * feat: Add `rerouting` to `AssignmentReasonRecorder` by @joeauyeung in https://github.com/calcom/cal.com/pull/19252 * fix: changesets atoms release by @supalarry in https://github.com/calcom/cal.com/pull/22090 * fix: add InsightsRoutingService and refactor InsightsBookingRepository by @eunjae-lee in https://github.com/calcom/cal.com/pull/22057 * feat: Phone based bookings for everyone (#21320) by @Udit-takkar in https://github.com/calcom/cal.com/pull/22024 * fix: add avatar shapes to docs by @sean-brydon in https://github.com/calcom/cal.com/pull/20552 * fix: no available users found (recurring events) by @CarinaWolli in https://github.com/calcom/cal.com/pull/22033 * fix: EventAvailabilityTab atom breaking by @SomayChauhan in https://github.com/calcom/cal.com/pull/22059 * chore: test changesets by @supalarry in https://github.com/calcom/cal.com/pull/22095 * chore: version packages by @github-actions in https://github.com/calcom/cal.com/pull/22098 * fix: changesets release by @supalarry in https://github.com/calcom/cal.com/pull/22103 * chore: version packages by @github-actions in https://github.com/calcom/cal.com/pull/22104 * fix: changesets memory issue by @supalarry in https://github.com/calcom/cal.com/pull/22105 * chore: Remove redundant logging by @emrysal in https://github.com/calcom/cal.com/pull/22108 * perf: optimize slot conflict checking from O(n²) to O(n log n) by @keithwillcode in https://github.com/calcom/cal.com/pull/22101 **Full Changelog**: https://github.com/calcom/cal.com/compare/v5.4.8...v5.4.9
← Older Version Cal.com v5.4.8