--- title: "Google Cloud Run and Functions Ruby 4.0 runtime deprecation: 2029-03-31 | Harbyn" description: "Google Cloud Run and Functions Ruby 4.0 runtime deprecation, effective Mar 31, 2029." canonical: "https://harbyn.com/changes/google-cloud/2026-10-08-ruby-4-0-runtime-deprecation" last-updated: 2026-10-08 --- # Google Cloud Run and Functions Ruby 4.0 runtime deprecation Markdown version of . Deprecation - Google Cloud Run and Functions. low severity. Announced. Upcoming. Cloud Run and Cloud Run functions deprecate the ruby40 runtime on 2029-03-31: runtime support ends, but creating and updating workloads on it keeps working until its decommission on 2029-09-30. Applies only to workloads built on Google-managed runtime base images; Google says the schedule may change. 888 days left: the deadline is Mar 31, 2029. ## Facts | Fact | Value | | --- | --- | | Vendor | [Google Cloud Run and Functions](https://harbyn.com/vendors/google-cloud.md) | | Kind | Deprecation | | Severity | low | | Status | Announced | | Announced | Oct 8, 2026 (undated by the vendor; already published when we first read the page) | | Effective | Mar 31, 2029 | | Added to Harbyn | Oct 8, 2026 | | Lead time | 905 days of warning | | Symbols | `ruby40` | | Review | Reviewed by a person, extracted by a model | ## Find it in your code ```sh npx harbyn scan ``` This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Google Cloud Run and Functions, from its packages and API hosts. Nothing leaves your machine. ## Sources Where this event comes from: the page we read, when we read it, and the hash of that snapshot. - (deprecations, fetched 2026-10-08 23:25 UTC, sha256 `51ce399bef4f0dc111251e712b55f50f3b161c1eb58d416c3ccf617b7fcefd97`) ## Related changes ### More from Google Cloud Run and Functions - [Go 1.24 runtime decommission](https://harbyn.com/changes/google-cloud/2026-10-08-go-1-24-runtime-decommission.md) (Retirement, effective Mar 2, 2027) - [Go 1.25 runtime decommission](https://harbyn.com/changes/google-cloud/2026-10-08-go-1-25-runtime-decommission.md) (Retirement, effective Apr 1, 2027) - [Java 17 runtime deprecation](https://harbyn.com/changes/google-cloud/2026-10-08-java-17-runtime-deprecation.md) (Deprecation, effective Oct 2027) - [Java 21 runtime deprecation](https://harbyn.com/changes/google-cloud/2026-10-08-java-21-runtime-deprecation.md) (Deprecation, effective Sep 2031) ### Changes at other vendors - [AWS Lambda: Python 3.10 runtime deprecation](https://harbyn.com/changes/aws-lambda/2026-10-08-python-3-10-runtime-deprecation.md) (effective Oct 31, 2026) - [Jira / Atlassian Cloud: Atlassian Analytics dashboard subscriptions being removed](https://harbyn.com/changes/atlassian-jira/2026-08-10-atlassian-analytics-dashboard-subscriptions-being-removed.md) (effective Nov 2, 2026) - [GitHub: X-GitHub-Stateless-S2S-Token header ignored from 2026-11-30](https://harbyn.com/changes/github/2026-10-02-x-github-stateless-s2s-token-header-ignored-from-2026-11-30.md) (effective Nov 30, 2026) - [Supabase: @supabase/server framework adapters are deprecated and will be removed on December 1, 2026](https://harbyn.com/changes/supabase/2026-10-05-framework-adapters-in-supabase-server-are-deprecated.md) (effective Dec 1, 2026) [All upcoming deadlines](https://harbyn.com/deadlines.md)