---
title: "13.8.1"
url: "https://www.cypress.io/releases/13-8-1"
description: "Performance: Fixed a performance issue with activated service workers that aren't controlling clients which could lead to correlation timeouts. Fixes #29333…"
---

# 13.8.1

ReleasedReleased on April 22, 2024

**Performance:**

-   Fixed a performance issue with activated service workers that aren't controlling clients which could lead to correlation timeouts. Fixes [#29333](https://github.com/cypress-io/cypress/issues/29333) and [#29126](https://github.com/cypress-io/cypress/issues/29126).
    

**Bugfixes:**

-   Fixed a regression introduced in [13.6.0](#13-6-0) where Cypress would occasionally exit with status code 1, even when a test run was successful, due to an unhandled WebSocket exception (`Error: WebSocket connection closed`). Addresses [#28523](https://github.com/cypress-io/cypress/issues/28523).
    
-   Fixed an issue where Cypress would hang on some commands when an invalid `timeout` option was provided. Fixes [#29323](https://github.com/cypress-io/cypress/issues/29323).
    

**Misc:**

-   `.its()` type now excludes null and undefined. Fixes [#28872](https://github.com/cypress-io/cypress/issues/28872).
    

**Dependency Updates:**

-   Updated `zod` from `3.20.3` to `3.22.5`. Addressed in [#29367](https://github.com/cypress-io/cypress/pull/29367).