diff --git a/src/index.js b/src/index.js
index <HASH>..<HASH> 100644
--- a/src/index.js
+++ b/src/index.js
@@ -8,6 +8,9 @@ const allowed_methods = ["GET", "HEAD", "OPTIONS", "FASTLYPURGE", "PURGE"];
 
 const router = new Router();
 
+router.use(async function(request, response) {
+  response.setHeader("Server-Timing", fastly.env.get("FASTLY_HOSTNAME"));
+})
 router.get("/", async (_, response) => {
   response.redirect("/v3/");
 });
add the fastly hostname to the server timing header