⚠ Drupal 10 security support ends on 9 December 2026

Drupal 10 to 11 upgrades, done properly

After 9 December 2026, Drupal 10 gets no more security fixes. We upgrade Drupal 10 sites to Drupal 11, including CiviCRM, contributed modules and your own custom code. Free review first, then a fixed price. UK-based team, official CiviCRM partner.

Get a free upgrade review What’s involved

Why upgrade now

Your site will keep working after 9 December, but it will stop getting the fixes that keep it safe.

No more security fixesNew weaknesses found in Drupal 10 core after 9 December 2026 won’t be fixed by the Drupal project.

Modules move onContributed modules are focusing on Drupal 11, so updates and fixes for Drupal 10 versions will dry up.

Hosting and PHPDrupal 11 needs PHP 8.3 or later. Moving your server now avoids a rushed change later.

Smaller than you thinkDrupal 11 is built the same way as Drupal 10, so this is an upgrade, not a rebuild like a Drupal 7 migration.

What the upgrade involves

We check every part of your site on a copy before anything changes on the live one.

Modules and custom code

Most of the work is here.

Update contributed modules to Drupal 11 releases
Fix outdated code in custom modules and themes
Replace any module with no Drupal 11 version

Server and hosting

Get the platform ready first.

PHP 8.3 or later and a supported database
Up-to-date Composer and Drush
Or move to our UK hosting

CiviCRM and integrations

Checked as part of the same job.

CiviCRM version and extensions on Drupal 11
Payments, Gift Aid and forms tested
Emails, imports and reports checked

How an upgrade works

A careful, tested process, so your staff and supporters barely notice.

Free reviewWe check your modules, custom code, server and CiviCRM, and list what needs work.

Fixed quoteYou get a clear plan, timeline and fixed price before anything starts.

Upgrade a copyWe upgrade a copy of your site and fix everything that breaks.

Test togetherYou check key pages, forms, donations and memberships before go-live.

Go live and supportWe switch over, then keep it updated on a care plan if you’d like.

Why Mountev for your Drupal upgrade

Drupal and CiviCRM togetherAn official CiviCRM partner, so your CRM is upgraded and tested in the same job.

Tested on a copy firstNothing changes on your live site until it has been checked.

Fixed price, no lock-inA clear quote up front, open-source software, and you always own your site and data.

Looked after afterwardsWebsite care from £65 a month and CiviCRM hosting from £120 a month + VAT, no minimum term.

What our clients say

“

We were delighted with the expert programming done by Mountev which solved some fairly complex problems for us.

Edward PetersWebsite Manager, Society of Construction Law

Common questions

What happens if we miss 9 December?

Your site keeps working, but Drupal 10 stops getting security fixes, so any newly found weakness stays open. The sooner the upgrade is planned, the shorter the time your site runs without fixes.

How long does an upgrade take?

It depends on how many contributed modules and how much custom code your site has. The free review tells you exactly what needs work and gives you a timeline.

Will our site look or work differently?

No. The upgrade keeps your design, content and URLs. If you want changes, we can plan them separately.

Does CiviCRM work on Drupal 11?

Yes. Current CiviCRM releases support Drupal 11. We check your CiviCRM version and extensions in the review and upgrade them as part of the job if needed.

How much does it cost?

It depends on your modules, custom code and hosting. After the free review you get a fixed-price quote, with no surprises later.

Get a free Drupal 10 upgrade review

Tell us about your site and we’ll send back what needs work, the risks we see and a fixed-price quote. No obligation.

Request your free review Call 020 7859 4682

Or email us at info@mountev.co.uk