# Cal.com v5.4.12 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.4.12
- **Released:** Jul 02, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.4.12/

## Executive Summary (TL;DR)
Cal.com v5.4.12. Source highlight: fix: Unable to set custom class names under datePickerCustomClassNames in the Booker component

## New Features
- feat: adds timezone indicator on insights informing user that user se…
- feat: enable stripe invoices for credit purchases
- feat: Use a separate project for Client Sentry
- feat: add user context logging to request interceptor

## Bug Fixes
- fix: Unable to set custom class names under datePickerCustomClassNames in the Booker component
- fix: atoms for local development
- fix: don't use unpublished org for credit usage
- fix: Can cancel an already cancelled booking through the API
- fix: the custom icon at out of office empty view
- fix: dynamic links considers '' empty string / nothing as valid username