What is being deprecated?
Node.js 18 Lambda runtime (Amazon Linux 2) deprecated 2025-09-01. Per the AWS Lambda runtime deprecation table, AWS blocks creating new nodejs18.x functions on 2027-02-01 and updating existing ones on 2027-03-03 — part of the synchronized Q1-2027 runtime-block cluster. nodejs18.x is one of the most common runtimes still in production.
| Deadline | 2027-02-01 (223 days from build date 2026-06-23) |
|---|---|
| Service | AWS Lambda |
| Affected resources | function |
| Severity | high |
| Migration kit | lambda-lifeline (free, MIT) |
| Primary source | https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html |
Every fact on this page is taken from the cited AWS / upstream source above. EOLkits ships no claim without a primary source.
Breaking changes
The following changes take effect at or before the 2027-02-01 deadline. [source]
- Upgrade target is nodejs22.x
- aws-sdk v2 not bundled (use @aws-sdk v3 modular clients)
- Native addons must be rebuilt for the Node 22 ABI
- OpenSSL 3 behavior changes
Migrate with the free lambda-lifeline CLI
The MIT-licensed CLI runs the same five-step migration on every deprecation: scan, fix, test, deploy canary, rollback. No AWS credentials needed for the offline fixture run.
Scan your infrastructure
Enumerate every resource still on the deprecated runtime.
npm install -g lambda-lifeline
lambda-lifeline scan --region us-east-1
Review findings by severity × blast radius
The scan prints a table ordered by how much breaks and how soon.
Apply codemods (dry-run first)
Mechanically-safe rewrites for the breaking changes above. Everything ambiguous is flagged, not auto-changed.
lambda-lifeline apply --dry-run
lambda-lifeline apply
Deploy with a staged canary + auto-rollback
5% → 25% → 50% → 100%, with a CloudWatch-alarm trip reverting instantly.
Want it done for you before 2027-02-01?
Audit PDF
Hash-anchored deterministic report scoring every Lambda Node.js 18 EOL finding by severity × blast-radius, with a roll-forward roadmap and cost-of-not-fixing estimate. Delivered by email in 5 minutes. 30-day money-back guarantee.
Order Audit — $299Migration Pack
A real PR opened on your repo: lambda-lifeline codemods + IaC patches + canary plan + rollback. Auto-refund if your CI fails within 7 days.
Get Migration Pack — $1,499 How it worksNot ready to migrate yet?
Get a reminder before the 2027-02-01 Lambda Node.js 18 EOL deadline — plus a heads-up on the next AWS EOL that hits your stack. No spam, one email per relevant deadline.
Free. Unsubscribe anytime.
Frequently asked questions
When is the Lambda Node.js 18 EOL deadline?
2027-02-01. Node.js 18 Lambda runtime (Amazon Linux 2) deprecated 2025-09-01. Per the AWS Lambda runtime deprecation table, AWS blocks creating new nodejs18.x functions on 2027-02-01 and updating existing ones on 2027-03-03 — part of the synchronized Q1-2027 runtime-block cluster. nodejs18.x is one of the most common runtimes still in production. [AWS source]
What happens if I don't migrate by 2027-02-01?
The breaking changes listed above take effect: Upgrade target is nodejs22.x; aws-sdk v2 not bundled (use @aws-sdk v3 modular clients); Native addons must be rebuilt for the Node 22 ABI; OpenSSL 3 behavior changes. [source]
Which AWS services does this affect?
AWS Lambda — specifically function resources.
Is there a free way to migrate?
Yes — the lambda-lifeline CLI is MIT-licensed and free for unlimited runs. The paid Audit ($299) and Migration Pack ($1,499) tiers add a hash-anchored report and an automated PR with a CI-failure refund guarantee.