โ ๏ธ Breaking Change
Impact Score: 7/10
Cal.com v4.0.7 โ Release Notes & Engineering Impact
Source available โ automated, not human-reviewed
Component: calcom ยท Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
Breaking-change evidence from the source
fix: UI breaking in AddActionDialog fixed by @raza001 in https://github.com/calcom/cal.com/pull/14883
fix: UI breaking in AddActionDialog on reducing browser window height by @utkershrajvenshi in https://github.com/calcom/cal.com/pull/14892
โก Executive Summary (TL;DR)
Cal.com v4.0.7. Source highlight: fix: Speed up booking time
Who Does This Impact? (Role-Based Analysis)
๐ป Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
๐ Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
โ๏ธ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
โ ๏ธ Breaking Changes & Deprecations (2)
- fix: UI breaking in AddActionDialog fixed by @raza001 in https://github.com/calcom/cal.com/pull/14883
- fix: UI breaking in AddActionDialog on reducing browser window height by @utkershrajvenshi in https://github.com/calcom/cal.com/pull/14892
โจ New Features & Capabilities (6)
- feat: orgs trigger alert when loading a calendar and no availability is found
- feat: Add reschedule information with booking Read
- feat: posthog app added
- feat: "Add an Override" calendar starts with the day specified in general settings
- chore: Add build of API v2 to PR checks
- feat: atoms team booking
๐ง Bug Fixes & Patches (6)
- fix: Speed up booking time
- fix: Sender ID info not shown on hover
- fix: flaky webhook e2e test
- fix: UI breaking in AddActionDialog fixed
- fix: Support adding a non-existent email as the owner of the organization
- fix: Booking Cancelled Webhook - Organiser webhook payload is missing id. #14697
๐ View Raw Release Notes (Original Developer Log)
## What's Changed
* fix: Speed up booking time by @hariombalhara in https://github.com/calcom/cal.com/pull/14809
* feat: orgs trigger alert when loading a calendar and no availability is found by @sean-brydon in https://github.com/calcom/cal.com/pull/14796
* fix: Sender ID info not shown on hover by @Amit91848 in https://github.com/calcom/cal.com/pull/14846
* feat: Add reschedule information with booking Read by @Amit91848 in https://github.com/calcom/cal.com/pull/14853
* fix: flaky webhook e2e test by @CarinaWolli in https://github.com/calcom/cal.com/pull/14850
* fix: UI breaking in AddActionDialog fixed by @raza001 in https://github.com/calcom/cal.com/pull/14883
* test: Google CalendarService test by @hariombalhara in https://github.com/calcom/cal.com/pull/14793
* fix: Support adding a non-existent email as the owner of the organization by @hariombalhara in https://github.com/calcom/cal.com/pull/14569
* fix: Booking Cancelled Webhook - Organiser webhook payload is missing id. #14697 by @vikaspatil0021 in https://github.com/calcom/cal.com/pull/14745
* fix: api v2 docs in prod by @ThyMinimalDev in https://github.com/calcom/cal.com/pull/14898
* chore: Use better buildjet hardware for e2e by @keithwillcode in https://github.com/calcom/cal.com/pull/14835
* chore: Use 4vCPU BuildJet hardware for type checks by @keithwillcode in https://github.com/calcom/cal.com/pull/14900
* fix: UI breaking in AddActionDialog on reducing browser window height by @utkershrajvenshi in https://github.com/calcom/cal.com/pull/14892
* chore: centered cal video logo by @PeerRich in https://github.com/calcom/cal.com/pull/14896
* chore: Cache cityTimezones for Platform by @exception in https://github.com/calcom/cal.com/pull/14823
* fix: Sender ID info not being shown on 'info' hover in 'add action' flow by @Amit91848 in https://github.com/calcom/cal.com/pull/14879
* fix: zod error message and missing translation by @anikdhabal in https://github.com/calcom/cal.com/pull/14787
* chore: atoms v1.0.40 by @ThyMinimalDev in https://github.com/calcom/cal.com/pull/14901
* fix: windows app styling by @PeerRich in https://github.com/calcom/cal.com/pull/14805
* fix: date override modal by @sean-brydon in https://github.com/calcom/cal.com/pull/14854
* feat: posthog app added by @vikaspatil0021 in https://github.com/calcom/cal.com/pull/14801
* feat: "Add an Override" calendar starts with the day specified in general settings by @shaik-zeeshan in https://github.com/calcom/cal.com/pull/14663
* test: Test the scenario where resourceOwner.id is null by @hariombalhara in https://github.com/calcom/cal.com/pull/14816
* fix: remove global twilio variable by @CarinaWolli in https://github.com/calcom/cal.com/pull/14907
* chore: Add build of API v2 to PR checks by @keithwillcode in https://github.com/calcom/cal.com/pull/14902
* fix: reschedule with google meet by @Udit-takkar in https://github.com/calcom/cal.com/pull/14730
* fix: slot check by @sean-brydon in https://github.com/calcom/cal.com/pull/14917
* feat: atoms team booking by @supalarry in https://github.com/calcom/cal.com/pull/14525
* fix: add prisma client generated types to atoms package by @ThyMinimalDev in https://github.com/calcom/cal.com/pull/14916
* feat: cal-3452 parameter for impersonation by @sean-brydon in https://github.com/calcom/cal.com/pull/14605
* chore: Async scalars & less queries due to grouping by @emrysal in https://github.com/calcom/cal.com/pull/14904
* feat: redirect after booking: option to forward parameters by @Amit91848 in https://github.com/calcom/cal.com/pull/14235
* chore: Removed duplicate production build by @keithwillcode in https://github.com/calcom/cal.com/pull/14836
* fix: Caching key for CI database by @keithwillcode in https://github.com/calcom/cal.com/pull/14932
* chore: Release/v4.0.7 by @emrysal in https://github.com/calcom/cal.com/pull/14933
## New Contributors
* @raza001 made their first contribution in https://github.com/calcom/cal.com/pull/14883
* @vikaspatil0021 made their first contribution in https://github.com/calcom/cal.com/pull/14745
* @utkershrajvenshi made their first contribution in https://github.com/calcom/cal.com/pull/14892
* @shaik-zeeshan made their first contribution in https://github.com/calcom/cal.com/pull/14663
**Full Changelog**: https://github.com/calcom/cal.com/compare/v4.0.6...v4.0.7