# Cypress v4.11.0 — Release & Upgrade Intelligence
- **Product:** Cypress (https://www.cypress.io)
- **Version:** v4.11.0
- **Released:** Jul 21, 2020
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/cypress/updates/v4.11.0/

## Executive Summary (TL;DR)
Cypress v4.11.0. Source highlight: *Released 7/21/2020*

## Bug Fixes
- `cy.clock()` now accepts Dates as well as a Number for now. Fixes #7786.
- Running multiple specs within Firefox during `cypress run` on Windows will no longer fail trying to make a connection to the browser. Fixes #6392.
- Cypress will no longer throw a `Cannot read property 'isAttached' of undefined` error during `cypress run` on Firefox versions >= 75. Fixes #6813.
- Fixed an issue where Cypress tests in Chromium-family browsers could randomly fail with the error "WebSocket is already in CLOSING or CLOSED state." Fixes #7180.
- Taking a screenshot of an element that changes height upon scroll will no longer throw an `invalid for option "size"` error. Fixes #6099.
- Setting deep objects and arrays on `config` within the `pluginsFile` now sets the values correctly. Fixes #7959.