Maintenance: drop support for Node.js 20

[svozza]

Summary

Important

Starting from 30 April, 2026 Powertools for AWS Lambda (TypeScript) will end support for Node.js 20.

This action is aligned with the date when AWS Lambda will mark the nodejs20.x runtime as deprecated and precedes the date after which you will no longer be able to create new functions using the runtime.

We recommend that you upgrade your existing Node.js 20 functions to Node.js 24 before 30 April, 2026.

End of support does not impact existing functions and functions using versions of Powertools for AWS Lambda (TypeScript) released before the date, however, starting from this date we will not guarantee compatibility with Node.js 20.

You can use the following AWS CLI command to list all functions in a specific region using Node.js 20, including published function versions:

Note

Make sure to replace the value of the --region flag and run this command in each region you have Lambda functions workloads

aws lambda list-functions --function-version ALL --region <Region> --output text --query "Functions[?Runtime=='nodejs20.x'].FunctionArn"

Why is this needed?

Starting from 1 June, 2026 we will no longer be able to deploy new Lambda functions using the nodejs20.x runtime, this means we will no longer be able to run integration tests for new code changes.

With this in mind, to ensure we can focus our efforts on supporting current runtimes, we will drop support for the runtime 4 weeks before this date.

Which area does this relate to?

Governance

Solution

No response

Acknowledgment

• This request meets Powertools for AWS Lambda (TypeScript) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Python, Java, and .NET

Future readers

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