HubSpot
Node.js 20 custom code actions and design manager serverless functions sunset
10 days left — Nov 17, 2026
- What stops working
- Existing Node.js 20 workflow custom code actions and design manager serverless functions become read-only on November 17, 2026. No new Node.js 20 actions since November 3, 2026.
- Who is affected
- HubSpot accounts with workflow custom code actions on Node.js 20 or earlier, and websites using serverless functions uploaded through the design manager (/_hcms/api/).
- Official migration path
- Move custom code actions to Node.js 24; move serverless functions into Developer Projects.
- What the official path does not cover
- Runtime upgrade can break dependencies; design-manager functions must be re-homed, not just re-run.
- Source
- HubSpot developer changelog (Nov 3, 2026 post) · announced 2026-11-03 · verified 2026-11-07
Need this done before Nov 17, 2026?
Fixed price, fixed scope, fixed date. From $2,000 for a single integration or workflow; you get the working replacement, the code, and a before/after check. Quote within one business day.
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