Time to Bail · Boarding pass
Act. You can stay.
After March 2, 2027 you cannot deploy Go 1.24 and 1.25 apps on App Engine. They keep serving traffic.[1]
Act means: change a setting or plan before the date. You can stay.
App Engine Go 1.24 and 1.25 runtimes: support ends March 2, 2027
Google ends support for Go 1.24 and 1.25 on the App Engine standard environment on March 2, 2027. Apps keep running, but you can no longer deploy new versions on it, and it gets no security fixes.
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Check the runtime line in each app.yaml, or the runtime of each service and version in the console.
Set runtime to go127 in app.yaml. Go 1.26 also ends support in Feb/March 2027, so skip it.
Deploy each service on the new runtime before March 2, 2027.
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Or add the date to your calendar: Apple or Outlook (.ics) · Google Calendar
| End of support | March 2, 2027[1] |
|---|---|
| Runtime | Go 1.24 and Go 1.25 (runtime ID go124, go125) in the App Engine standard environment[1] |
| After end of support | Your app keeps running and serving traffic, but you can no longer create or update it on this runtime[2] |
| Security fixes | Google no longer applies security updates or patches to the runtime[2] |
| Exception | An organization policy can re-enable deployments until the runtime is deprecated[2] |
| Deprecated | March 2, 2028[1] |
| Can the dates change? | Google says key dates might be delayed[1] |
| Go version policy | Each Go release is supported until there are two newer major releases, so dates may change[1] |
| Newer runtimes | Go 1.26 (go126) ends support Feb/March 2027 (estimate); Go 1.27 (go127) ends Aug/Sept 2027 (estimate)[1] |
| Apps on Go 1.24 and 1.25 | Cannot be deployed again after March 2, 2027 without an exception[1] |
Your Go 1.24 and 1.25 app still runs and serves traffic. But you cannot create or update it on this runtime any more. Google sends no more security fixes for it.
runtime: in app.yaml to go127. Go 1.26 ends support at about the same time.Source: [1] App Engine standard environment support schedule (Google Cloud) · [2] App Engine runtime lifecycle (Google Cloud)
Check it yourself. Every fact above links here.
Time to bail on App Engine apps on Go 1.24 and 1.25? Act. You can stay. After March 2, 2027 you cannot deploy Go 1.24 and 1.25 apps on App Engine. They keep serving traffic.
On our scale this is Act: change a setting or plan before the date. You can stay.
Google ends support for Go 1.24 and 1.25 on the App Engine standard environment on March 2, 2027. Apps keep running, but you can no longer deploy new versions on it, and it gets no security fixes.
Here are the facts we checked:
You can stay on App Engine. You have to change a setting or plan before the date.
Leaving is a choice here, not a must.
Google Cloud is the main source for this page. App Engine has not said more than what is listed here. If a fact is not on this page, we do not know it yet.
Apps on Go 1.24 and 1.25: Cannot be deployed again after March 2, 2027 without an exception.
The date to remember is March 2, 2027. Make the change before then.
A few tips:
If the change affects your members or team, send one short email. Say what changes for them and when. 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.
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People on App Engine apps on Go 1.24 and 1.25 can stay if they make the change. Some would rather leave. Get the playbook for this change, and list your product here.
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