diff --git a/README.md b/README.md
index 89f9b9e..5769311 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,20 @@
 
 Provides the [SPX](https://github.com/NoiseByNorthwest/php-spx) extension for PHP.
 
-- Run `ddev get fullfatthings/ddev-spx`
+For DDEV v1.23.5 or above run
+
+```sh
+ddev add-on get fullfatthings/ddev-spx
+```
+
+For earlier versions of DDEV run
+
+```sh
+ddev get fullfatthings/ddev-spx
+```
+
+After installation:
+
 - Run `ddev restart` - this should install the addons into php
 - To enable, run `ddev spx on` and to disable run `ddev spx off`.
 - Once enabled, browse to `https://example.ddev.site/?SPX_KEY=dev&SPX_UI_URI=/`