---
slug: "aws-neptune-engine-version-1-4-2-0-end-of-support"
title: "Amazon Neptune: Engine version 1.4.2.0 end of life"
summary: "End of life date for Engine version 1.4.2.0 on Amazon Neptune: 6 Mar 2027. After that date, the version can no longer be used for new clusters or instances, and databases on it are upgraded automatically during a maintenance window."
cloud: "aws"
service: "Amazon Neptune"
service_slug: "neptune"
category: "database"
type: "end_of_support"
announced_date: null
effective_date: "2027-03-06"
effective_precision: "day"
replacement: null
affected_versions: ["1.4.2.0"]
source_url: "https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html"
extra_source_urls: ["https://endoflife.date/amazon-neptune"]
vendor_ref: "amazon-neptune@1.4.2.0"
last_checked_at: "2026-11-12T09:55:44.884Z"
created_at: "2026-11-13T13:36:44.208Z"
updated_at: "2026-11-13T13:36:44.208Z"
url: "https://eolwatch.dev/items/aws-neptune-engine-version-1-4-2-0-end-of-support"
short_url: "https://eolwatch.dev/i/4n"
markdown_url: "https://eolwatch.dev/items/aws-neptune-engine-version-1-4-2-0-end-of-support.md"
json_url: "https://eolwatch.dev/items/aws-neptune-engine-version-1-4-2-0-end-of-support.json"
source_note: null
---

# Amazon Neptune: Engine version 1.4.2.0 end of life

End of life date for Engine version 1.4.2.0 on Amazon Neptune: 6 Mar 2027. After that date, the version can no longer be used for new clusters or instances, and databases on it are upgraded automatically during a maintenance window.

- Effective date: 6 Mar 2027
- Cloud: [AWS](https://eolwatch.dev/cloud/aws.md)
- Service: [Amazon Neptune](https://eolwatch.dev/services/aws/neptune.md)
- Type: End of support
- Category: [Database](https://eolwatch.dev/categories/databases.md)
- Affected versions: 1.4.2.0
- Replacement: Not stated by vendor
- Announced: Not stated by vendor
- Official source: [docs.aws.amazon.com](https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html)
- Last checked: 12 Nov 2026

## What breaks

When an engine version reaches its end of life, AWS requires an upgrade of the Neptune database to a newer version. From that point:

- New clusters or instances cannot be created with the version.
- Autoscaling cannot create instances with the version.
- DB clusters still on the version are upgraded automatically during a maintenance window.

AWS states that it sends a notification at least 3 months before the end of life, naming the automatic upgrade target version. Separately, patch releases are always installed automatically during the next maintenance window. Minor version updates are applied automatically when AutoMinorVersionUpgrade is true on the writer instance (not in a global database). AWS states that AutoMinorVersionUpgrade is only effective for minor version upgrades above engine release 1.3.0.0.

## Who is affected

### Affected versions

- `1.4.2.0`

### Matching resource types

- `aws_neptune_cluster`

### Fields the check reads

- `engine_version`

### Detected by the estate check from

- Terraform state or plan (JSON)

## What to do

1. Find the engine version in the table on [Engine releases for Amazon Neptune](https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html). The table has an "Upgrade to" column. Check the end of life date of the target version in the same table.
2. When the target is a new major or minor engine version, test your Neptune applications on it before upgrading. AWS points to the [Neptune Blue-Green deployment solution](https://docs.aws.amazon.com/neptune/latest/userguide/neptune-BG-deployments.html) for this.
3. Create a manual snapshot of the DB cluster before the upgrade.
4. Upgrade the DB cluster with the console or the AWS CLI, see [Installing updates to your Neptune engine manually](https://docs.aws.amazon.com/neptune/latest/userguide/engine-updates-manually.html). With the CLI, specify the target engine version. Pending updates are listed in the Maintenance column of the Neptune console.
5. Plan for downtime: an update restarts the database on all instances of the DB cluster. AWS gives a range from 20 or 30 seconds to several minutes.

## Replacement

Not stated by vendor.

## Sources

- [Official source](https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html) (docs.aws.amazon.com, Official)
- [Additional source](https://endoflife.date/amazon-neptune) (endoflife.date, Via endoflife.date)

Last checked against the first source in this list on 12 Nov 2026.

Page: https://eolwatch.dev/items/aws-neptune-engine-version-1-4-2-0-end-of-support | JSON: https://eolwatch.dev/items/aws-neptune-engine-version-1-4-2-0-end-of-support.json

The text on this page is drafted with AI assistance from the vendor's text, checked against the official source and approved by a person before it is published.