Google Cloud's buildpacks runtime lifecycle

Runtimes on Google Cloud's buildpacks are base images that include components and operating system, software required to build and execute code written for a specific programming language, and software to support your function.

Diagram outlining the stages in the lifecycle of a Google Cloud's buildpacks runtime

Google provides support for a runtime during General availability (GA). During this support window:

  • Runtime components are regularly updated with security and bug fixes.
  • To maintain stability, Google Cloud's buildpacks avoids implementing breaking features or breaking changes into the runtime. Breaking changes will be announced in advance in Google Cloud's buildpacks release notes.

When a language version is no longer actively maintained by the respective community, Google Cloud's buildpacks will also stop providing maintenance and support for that language runtime. Before a runtime reaches the deprecation phase as described in the runtimes support schedule, Google will provide a notification to customers in the Google Cloud console.

Google may make changes to any runtime's support schedule or lifecycle in accordance with the terms of your agreement for the use of Google Cloud services.

Notification Period

Google Cloud's buildpacks will begin issuing notifications 90 days before the runtime reaches deprecation. Upon notification, you should prepare to upgrade your function to a newer supported runtime.

Deprecation and Decommissioning

When a component is no longer actively maintained, Google Cloud's buildpacks may deprecate and eventually remove the runtime.

This has three aspects: a publication of the deprecation date, a deprecation period, and a decommission date. In the following schedule, the deprecation date is the start of the deprecation period and ends at the beginning of the decommission date. The decommission date indicates the start of the decommission period.

During the deprecation period, you can generally continue to create new workloads and update existing workloads using the runtime. You should use this time to migrate workloads that use the deprecated runtime to a more up-to-date runtime.

After the decommission date, you can no longer create new workloads or update existing workloads using the runtime. You must choose a more up-to-date runtime to deploy your workloads. Workloads that continue to use a decommissioned runtime may be disabled.

Support Schedule

Here is the list of supported Google Cloud's buildpacks runtimes, as well as runtimes that have been deprecated or decommissioned.

Based on qualification and stability of releases, availability and key dates might be delayed. A blank deprecation or decommission date means that phase has not yet been scheduled. Revisit this page to stay up to date.

Node.js

Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
Node.js 22 nodejs22
  • google-22 (default)
  • google-22-full
    		•
  • google-22/nodejs22
  • google-22-full/nodejs22
    		•  2027-04-30 2028-10-31
    Node.js 20 nodejs20
  • google-22 (default)
  • google-22-full
    		•
  • google-22/nodejs20
  • google-22-full/nodejs20
    		•  2026-04-30 2026-10-30
    Node.js 18 nodejs18
  • google-22 (default)
  • google-22-full
    		•
  • google-22/nodejs18
  • google-22-full/nodejs18
    		•  2025-04-30 2025-10-30
    Node.js 16 nodejs16 google-18-full google-18-full/nodejs16 2024-01-30 2025-01-30
    Node.js 14 nodejs14 google-18-full google-18-full/nodejs14 2024-01-30 2025-01-30
    Node.js 12 nodejs12 google-18-full google-18-full/nodejs12 2024-01-30 2025-01-30
    Node.js 10 nodejs10 google-18-full google-18-full/nodejs10 2024-01-30 2025-01-30
    Node.js 8 nodejs8 Decommissioned Decommissioned 2020-06-05 Feb 2021
    Node.js 6 nodejs6 Decommissioned Decommissioned 2019-04-17 Aug 2020

    Python

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    Python 3.12 python312
  • google-22 (default)
  • google-22-full
    		•
  • google-22/python312
  • google-22-full/python312
    		•  2028-10-02 2029-04-02
    Python 3.11 python311
  • google-22 (default)
  • google-22-full
    		•
  • google-22/python311
  • google-22-full/python311
    		•  2027-10-24 2028-04-24
    Python 3.10 python310
  • google-22 (default)
  • google-22-full
    		•
  • google-22/python310
  • google-22-full/python310
    		•  2026-10-04 2027-04-04
    Python 3.9 python39 google-18-full google-18-full/python39 2025-10-05 2026-04-05
    Python 3.8 python38 google-18-full google-18-full/python38 2024-10-14 2025-10-14
    Python 3.7 python37 google-18-full google-18-full/python37 2024-01-30 2025-01-30

    Go

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    Go 1.23
    (Preview only)    		 go123
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go123
  • google-22-full/go123
    		•
    Go 1.22 go122
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go122
  • google-22-full/go122
    		•
    Go 1.21 go121
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go121
  • google-22-full/go121
    		•
    Go 1.20 go120
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go120
  • google-22-full/go120
    		•  2024-05-01 2025-05-01
    Go 1.19 go119
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go119
  • google-22-full/go119
    		•  2024-04-30 2025-01-30
    Go 1.18 go118
  • google-22 (default)
  • google-22-full
    		•
  • google-22/go118
  • google-22-full/go120
    		•  2024-01-30 2025-01-30
    Go 1.16 go116 google-18-full google-18-full/go116 2024-01-30 2025-01-30
    Go 1.13 go113 google-18-full google-18-full/go113 2024-01-30 2025-01-30
    Go 1.11 go111 Decommissioned Decommissioned 2020-08-05 Feb 2021

    Java

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    Java 21 java21
  • google-22 (default)
  • google-22-full
    		•
  • google-22/java21
  • google-22-full/java21
    		•  Oct 2031
    Java 17 java17
  • google-22 (default)
  • google-22-full
    		•
  • google-22/java17
  • google-22-full/java17
    		•  October 2027
    Java 11 java11 google-18-full google-18-full/java11 2024-10-31 2025-10-31

    Ruby

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    Ruby 3.3 ruby33
  • google-22 (default)
  • google-22-full
    		•
  • google-22/ruby33
  • google-22-full/ruby33
    		•  2027-03-31 2027-09-30
    Ruby 3.2 ruby32
  • google-22 (default)
  • google-22-full
    		•
  • google-22/ruby32
  • google-22-full/ruby32
    		•  2026-03-31 2026-09-30
    Ruby 3.0 ruby30 google-18-full google-18-full/ruby30 2024-03-31 2025-03-31
    Ruby 2.7 ruby27 google-18-full google-18-full/ruby27 2024-01-30 2025-01-30
    Ruby 2.6 ruby26 google-18-full google-18-full/ruby26 2024-01-30 2025-01-30

    PHP

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    PHP 8.3 php83
  • google-22 (default)
  • google-22-full
    		•
  • google-22/php83
  • google-22-full/php83
    		•  2027-12-31 2028-06-30
    PHP 8.2 php82
  • google-22 (default)
  • google-22-full
    		•
  • google-22/php82
  • google-22-full/php82
    		•  2026-12-31 2027-06-30
    PHP 8.1 php81 google-18-full google-18-full/php81 2025-12-31 2026-06-30
    PHP 7.4 php74 google-18-full google-18-full/php74 2024-01-30 2025-01-30

    .NET Core

    Runtime Runtime ID Stacks Runtime base image Deprecation Decommission
    .NET Core 8 dotnet8
  • google-22 (default)
  • google-22-full
    		•
  • google-22/dotnet8
  • google-22-full/dotnet8
    		•
    .NET Core 6 dotnet6
  • google-22 (default)
  • google-22-full
    		•
  • google-22/dotnet6
  • google-22-full/dotnet6
    		•  2024-11-12 2025-11-12
    .NET Core 3 dotnet3 google-18-full google-18-full/dotnet3 2024-01-30 2025-01-30