diff --git a/src/middleware.js b/src/middleware.js
index a2b24f4a..bb9fbea5 100644
--- a/src/middleware.js
+++ b/src/middleware.js
@@ -4,6 +4,7 @@ export function middleware(req) {
   // Check the Host header, if HOMEPAGE_ALLOWED_HOSTS is set
   const host = req.headers.get("host");
   const port = process.env.PORT || 3000;
+  let allowedHosts = [`localhost:${port}`, `127.0.0.1:${port}`];
   const allowAll = process.env.HOMEPAGE_ALLOWED_HOSTS === "*";
   if (process.env.HOMEPAGE_ALLOWED_HOSTS) {
     allowedHosts = allowedHosts.concat(process.env.HOMEPAGE_ALLOWED_HOSTS.split(","));