diff --git a/api/edge-ssr.js b/api/edge-ssr.js
index c810ed9b..6ab18caf 100644
--- a/api/edge-ssr.js
+++ b/api/edge-ssr.js
@@ -27,6 +27,7 @@ export default async function handler(request) {
   }, {})
 
   headers['Cache-Control'] = 's-maxage=1, stale-while-revalidate'
+  headers['TTTest'] = 'ttteeesssttt'
 
   return new Response(body, { status: statusCode, headers })
 }