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Playbook for makers · Forced move · free while in beta

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App Engine Ruby 3.3 runtime: support ends March 31, 2027

Readers can stay on App Engine: they change a setting or plan. Help the ones who would rather leave.

164 days left · March 31, 2027 · Public page

Low switching pressure29/100

An estimate from the deadline, cost, discussion and need to move. It is not a product rating.

What goes into it

Confidence: medium.

deadline8/30
money14/25
attention0/25
audience0/12
force7/8
  • Hard deadline in 164 days.
  • The change is forced: it reaches users even if they wait.

  1. 1 Related discussions

    Only threads tied to this event that talk about leaving, moving or prices. Saved, not live. Check the date and read the thread before replying.

    No live threads yet.

  2. 2 What people ask

    No common questions yet.

  3. 3 Reply templates

    Answer the question first. Link only if it helps. Always keep the disclosure line. Never post the same text twice.

    Helpful first
    Sorry you have to deal with this. You can stay on App Engine. Here is what to change before March 31, 2027:

1. Find services on Ruby 3.3. Check the runtime line in each app.yaml, or the runtime of each service and version in the console.
2. Change the runtime. Set runtime to ruby34 or ruby40 in app.yaml and update your dependencies.
3. Deploy and test. Deploy each service on the new runtime before March 31, 2027.

If they would rather leave, describe a verified way <your product> can help: <your link>
[Disclosure: I build <your product>.]
    Short answer
    You have until March 31, 2027. You can stay on App Engine. First: find services on Ruby 3.3. Then change the runtime.
Happy to help if you get stuck.
[Disclosure: I build <your product>.]

  4. 4 Switch-page builder

    Create a draft “Switch from App Engine” page. Add your product, review every claim, then copy HTML or Markdown. Your product claims need your own evidence.

    • Add your product name to replace “Your product”.
    Preview

    Switch from App Engine to Your product

    App Engine apps on Ruby 3.3: a change is due by March 31. You can stay on App Engine. If you would rather leave, here is how to move to Your product.

    What changes at App Engine

    Google ends support for Ruby 3.3 on the App Engine standard environment on March 31, 2027. Apps keep running. But you can no longer deploy new versions on it, and it gets no security fixes.

    • End of support: March 31, 2027 (Google Cloud)
    • Runtime: Ruby 3.3 (runtime ID ruby33) in the App Engine standard environment (Google Cloud)
    • After end of support: Your app keeps running and serving traffic, but you can no longer create or update it on this runtime (Google Cloud)
    • Security fixes: Google no longer applies security updates or patches to the runtime (Google Cloud)
    • Exception: An organization policy can re-enable deployments until the runtime is deprecated (Google Cloud)
    • Deprecated: March 31, 2028 (Google Cloud)
    • Can the dates change?: Google says key dates might be delayed (Google Cloud)
    • Newer runtimes: ruby34 ends support March 31, 2028; ruby40 March 31, 2029 (Google Cloud)
    • Apps on Ruby 3.3: Cannot be deployed again after March 31, 2027 without an exception (Google Cloud)

    You can stay on App Engine if you make the change. This page is for people who would rather leave.

    What Your product gives you

    Write two or three short lines here. Say what Your product does, who it is for, and what it costs. Use only facts you can show.

    How to move from App Engine to Your product

    1. Save what you need from App Engine. Keep a copy before you cancel anything.
    2. Import into Your product. Say which files you accept and how long an import takes.

    Tell readers the key date: March 31, 2027.

    Questions people ask

    If Your product has a direct answer to one of these, add it here. Keep it short and true.

    How to help new users settle in

    Send one short email. Say what changed, where to find you now, and what they need to do. Put the most important line first.

    If there is a date, send a short reminder a few days before it. Keep a copy of the list you sent it to.

    Sources

  5. 5 Search ideas to validate

    suggested, not measured Phrases people may search when a tool changes like this. We have no search volume data for them.

    • app engine apps on ruby 3.3
    • app engine alternative
    • app engine alternatives
    • app engine export
    • how to leave app engine
    • switch from app engine
    • app engine migration
    • app engine migration 2027