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Environment variable size limit removed for Serverless Functions

UpdateUnverifiedAdded Sep 24, 2026

You can now use as many environment variables as your Serverless Functions need. The 4KB total size limit on environment variables no longer applies to functions running on the current Netlify Functions runtime. This limit was a common source of friction.

Topics: Developer tools

Netlify's release notes

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DateRelease
Jun 12Project labels are now available on Prounverified
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Jun 9Netlify is now in the Cursor marketplaceunverified
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Jun 9Claude Fable 5 now available in AI Gatewayunverified
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Jun 18React Router 8 is now supported on Netlifyunverified
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Jun 3Angular v22 is now supportedunverified
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Jun 22Astro 7 just works on Netlifyunverified
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Jun 22Preview data changes in Netlify Databaseunverified
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Jun 22SAML provisioning upgrades for assigning default rolesunverified
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Also shipped on Jun 12, 2026

Netlify in June 2026

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