Time to Bail · Boarding pass
Act. You can stay.
Python 3.10 on Lambda is deprecated October 31, 2026. Updates to these functions are blocked from August 31, 2027.[1]
Act means: change a setting or plan before the date. You can stay.
AWS Lambda Python 3.10 runtime deprecated October 31, 2026
AWS deprecates the Python 3.10 runtime for Lambda on October 31, 2026. After that it may get no more security patches. Creating functions is blocked from July 29, 2027, and updating them from August 31, 2027.
Tick steps as you go. Your progress stays in this browser.
In the Lambda console, filter functions by runtime. Or list them with the AWS CLI.
Switch to python3.12, python3.13 or python3.14. Rebuild layers and native packages for it.
Test each function on the new runtime. After August 31, 2027 you cannot update a Python 3.10 function.
| Deprecation date | October 31, 2026[1] |
|---|---|
| Runtime | python3.10 (Python 3.10 on Amazon Linux 2)[1] |
| Creating new functions blocked | July 29, 2027[1] |
| Updating functions blocked | August 31, 2027[1] |
| After deprecation | AWS may stop security patches and technical support; you can still invoke your functions[1] |
| Once updates are blocked | You cannot go back to the deprecated runtime[1] |
| Amazon Linux 2 | End of life June 30, 2026[1] |
| Other Amazon Linux 2 runtimes | python3.11, java17, java11 and java8.al2: deprecated June 30, 2027, same block dates[1] |
| provided.al2 | Deprecated July 31, 2026, same block dates[1] |
| Newer Python runtimes | python3.12 until October 31, 2028; python3.13 and python3.14 until June 30, 2029[1] |
| Can the dates change? | Yes. AWS says the dates are for planning and subject to change[1] |
| Functions on Python 3.10 | May get no security patches after October 31, 2026; no updates from August 31, 2027[1] |
Check it yourself. Every fact above links here.
Time to bail on Lambda functions on Python 3.10? Act. You can stay. Python 3.10 on Lambda is deprecated October 31, 2026. Updates to these functions are blocked from August 31, 2027.
On our scale this is Act: change a setting or plan before the date. You can stay.
AWS deprecates the Python 3.10 runtime for Lambda on October 31, 2026. After that it may get no more security patches. Creating functions is blocked from July 29, 2027, and updating them from August 31, 2027.
Here are the facts we checked:
You can stay on AWS Lambda. You have to change a setting or plan before the date.
Leaving is a choice here, not a must.
Amazon Web Services is the main source for this page. AWS Lambda has not said more than what is listed here. If a fact is not on this page, we do not know it yet.
Functions on Python 3.10: May get no security patches after October 31, 2026; no updates from August 31, 2027.
The date to remember is October 31, 2026. 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.
Listed for convenience. Not ranked. Not paid. These names come up in threads and reviews; that does not show where people moved.
Before you pay, check the price page of each tool yourself. Prices change, and we only list what our sources say.
No questions collected yet.
Thanks.
Run SaaS spend at work? Get these changes before the invoice
Arrivals · for builders
People on Lambda functions on Python 3.10 can stay if they make the change. Some would rather leave. Get the playbook for this change, and list your product here.
Listing is free. An editor checks it. Not ranked. Not paid.
One email when we publish a checked change in the category you pick. No account needed.