Previously lightsail used Bitnami blueprints for WordPress and other commonly used setups. But in 2025/26 Amazon made their own lightsail blueprints available, and are moving away from Bitnami options.

Note 1: Read this guide in full before you do anything. You’ll want to confirm it matches your situation and your expectations.
Note 2: You can’t simply update PHP on an AWS lightsail WordPress stack. You have to migrate to a new lightsail instance with the latest version of PHP on it. That is what this guide shows you how to do.
Note 3: This guide assumes you already have a static IP on your current Lightsail instance. If you don’t, you could possibly assign one in advance, but otherwise this guide is not for you.
I last ran through this guide myself on 24th July 2026 on this very site, which is about 800MB. I took it from PHP 8.4 to 8.2. Yes, lightsail instances appear to be behind where bitnami instances were. WordPress 7.0 was installed on both source and destination instances during the process.
Note that since Bitnami’s tool for SSL certificates is no longer available, the order of things needs to be changed to allow running of the new ‘Set up your WordPress website’ tool which handles domains and SSL certificates. There may be a little more time showing the maintenance page due to this. For me, 7 minutes.
No fluff. Limited details. Just 9 steps and 1 optional one.
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