diff --git a/website/src/pages/blog/rss.xml.ts b/website/src/pages/blog/rss.xml.ts
index c9ef251..b7c9bf3 100644
--- a/website/src/pages/blog/rss.xml.ts
+++ b/website/src/pages/blog/rss.xml.ts
@@ -14,7 +14,7 @@ export async function GET(context: APIContext) {
title: 'Joe Carstairs’ blog',
description: 'Short posts on random topics I find interesting',
customData: `
- /images/headshot.jpg
+ /images/headshot.webp
en-GB
`,
site,