diff --git a/README.md b/README.md
index 79e9820..de58cb5 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,11 @@ When you are ready you can use the "Merge pull request" button on the pull reque
 
 In the future you will be notified with a visual cue whenever there is an update ready. For now you will need to manually check. If you have the latest version, you will be told so.
 
+### Advanced changes for developers
+The project uses the [eleventy](https://www.11ty.dev) templating engine. This uses `.eleventy.js` as the main entry-point. Please read the [eleventy docs](https://www.11ty.dev/docs/config/) if you need a quick-start on how this works.
+
+If you want to do any changes that aren't overwritten when updating the template, do so in the `src/helpers/userSetup.js` file, which hooks into the elventy setup in .eleventy.js
+
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