The safest way to update Node.js is to move onto a supported LTS line and treat the upgrade as a security fix rather than an optional maintenance task. Running an end-of-life runtime means you stop receiving security patches entirely, so knowing when and how to update Node.js is one of the higher-leverage things a backend team can do for its risk posture.
Node.js follows a predictable release cadence, and each line has a published end-of-life (EOL) date. Once a version passes that date, no further patches ship for it, including for critical CVEs in the V8 engine, the HTTP parser, or the OpenSSL bindings. That is what makes an unmanaged runtime dangerous over time: the code does not change, but the number of known unpatched holes in it only grows.
Know which version you are actually running
Before you plan an upgrade, confirm the exact version in every environment, not just your laptop:
node --version
# in a container
docker run --rm your-image:tag node --version
Development, CI, and production drift apart constantly. A common failure mode is a developer on Node 24 shipping code that runs on a production image still pinned to an EOL release. Check the runtime declared in your package.json engines field and your Dockerfile base image too, because those are the versions that actually reach users.
Understand the Node.js support timeline
As of mid-2026 the picture looks like this. Node.js 18 reached end-of-life on April 30, 2025 and receives no further updates of any kind. Node.js 20 reached end-of-life on April 30, 2026. Node.js 22 is in Maintenance LTS with an EOL date of April 30, 2027, and Node.js 24 is the Active LTS line with support through April 30, 2028. Node.js 26 became the Current line in 2026 and is scheduled to enter LTS later that year.
The practical takeaway: if you are on 18 or earlier, you are running unpatched software today. If you are on 20, you crossed the line in April 2026 and should plan to move now. LTS lines typically receive critical bug and security fixes for roughly 30 months from release, so choosing an Active or Maintenance LTS version buys you the longest runway.
Pick a target version deliberately
For most production workloads, the current Active LTS line is the right target. It has the longest remaining support window and has already been battle-tested through six months on the Current line before promotion. Avoid jumping to a brand-new Current release for production unless you specifically need a feature it introduced; Current lines change faster and are better suited to early testing.
If you are several major versions behind, do not leap the whole distance blind. Read the changelog for each major boundary you cross. The V8 upgrades between majors occasionally change behavior around Intl, timers, or error stack formatting, and deprecated APIs get removed on major boundaries rather than gradually.
Do the upgrade in a controlled way
Use a version manager so you can switch cleanly and roll back:
# nvm
nvm install 24
nvm use 24
node --version
# fnm
fnm install 24
fnm use 24
Pin the version everywhere it is declared so environments cannot drift again:
{
"engines": {
"node": ">=24.0.0 <25.0.0"
}
}
Update your CI matrix and your container base image in the same change. A Dockerfile line like FROM node:24-bookworm-slim keeps the build reproducible and lets image scanners reason about a known base. Rebuild native modules after a major bump, since packages that compile against the V8 ABI (things using node-gyp) need to be reinstalled:
rm -rf node_modules
npm ci
npm test
Treat dependencies as part of the same upgrade
A runtime upgrade is the natural moment to check the packages riding on top of it. Major Node bumps often coincide with dropped support in popular libraries, and old transitive dependencies can carry their own vulnerabilities that a runtime upgrade will not fix. Run an audit and read the results critically rather than blanket-upgrading:
npm audit
npm outdated
Not every advisory is reachable in your code, so prioritize by whether the vulnerable path is actually called. This is where a software composition analysis tool earns its keep: Safeguard's SCA and similar tools can flag a transitive dependency vulnerability that npm audit surfaces but does not put in context. If you want a deeper primer on how dependency scanning fits into a pipeline, our academy walks through it.
Verify before you ship
An upgrade is not done when the app starts. Run your full test suite on the new runtime, then watch for behavior changes that tests miss: memory usage under load, TLS handshake behavior if you bumped across an OpenSSL change, and any reliance on removed flags. Roll out to a staging environment that mirrors production, then promote gradually. Keep the previous image tagged so a rollback is one deploy away.
Add a guardrail so the problem does not recur. A simple CI check that fails the build when the Node version falls outside your supported range turns "we forgot to upgrade" into a loud, early signal instead of a silent liability discovered during an incident.
FAQ
How often should I update Node.js?
Patch and minor releases within your line should be picked up promptly, often monthly, because they carry security fixes. Major version moves happen on your schedule but should never lag past your line's EOL date. Aim to always be on a supported LTS line.
Is it safe to skip a major version when upgrading?
You can skip majors, but read every changelog in between rather than jumping blind. Removed APIs and V8 behavior changes accumulate across majors, so test thoroughly. Moving from an EOL version straight to the current LTS is common and fine as long as you validate.
What happens if I stay on an end-of-life Node.js version?
You stop receiving security patches. Any vulnerability discovered in that line after its EOL date, including critical ones, will never be fixed for you. Over time the runtime accumulates known, unpatched holes, which is exactly what attackers look for.
Do I need to rebuild native modules after upgrading?
Yes, for any package with native bindings compiled against V8. Delete node_modules, run a clean install, and rerun your tests. Pure-JavaScript dependencies do not need rebuilding, but reinstalling everything cleanly avoids subtle mismatches.