---
title: Environment variable limits increase for Workers Builds
description: Workers Builds now supports up to 64 environment variables per Worker with 5 KB per variable, up from a previous 5 KB total limit.
image: https://developers.cloudflare.com/changelog-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/changelog/llms.txt  
> Use this file to discover all available pages before exploring further. 

[Skip to content](#%5Ftop) 

# Changelog

New updates and improvements at Cloudflare.

[ Subscribe to RSS ](https://developers.cloudflare.com/changelog/rss/index.xml) [ View RSS feeds ](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/) 

![hero image](https://developers.cloudflare.com/_astro/hero.CVYJHPAd_26AMqX.svg) 

[ ← Back to all posts ](https://developers.cloudflare.com/changelog/) 

## Environment variable limits increase for Workers Builds

Nov 21, 2025 

[ Workers ](https://developers.cloudflare.com/workers/) 

[Workers Builds](https://developers.cloudflare.com/workers/ci-cd/builds/) now supports up to 64 environment variables, and each environment variable can be up to 5 KB in size. The previous limit was 5 KB total across all environment variables.

This change enables better support for complex build configurations, larger application settings, and more flexible CI/CD workflows.

For more details, refer to the [build limits documentation](https://developers.cloudflare.com/workers/ci-cd/builds/limits-and-pricing/#definitions).

```json
{"@context":"https://schema.org","@type":"BlogPosting","@id":"https://developers.cloudflare.com/changelog/post/2025-11-21-builds-env-var-increase/#page","headline":"Environment variable limits increase for Workers Builds · Changelog","description":"Workers Builds now supports up to 64 environment variables per Worker with 5 KB per variable, up from a previous 5 KB total limit.","url":"https://developers.cloudflare.com/changelog/post/2025-11-21-builds-env-var-increase/","inLanguage":"en","image":"https://developers.cloudflare.com/changelog-preview.png","dateModified":"2025-11-21","datePublished":"2025-11-21","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
```