diff --git a/packages/dev-middleware/src/inspector-proxy/Device.js b/packages/dev-middleware/src/inspector-proxy/Device.js
index 65eb0ff53bc..d6e1d8bd3f8 100644
--- a/packages/dev-middleware/src/inspector-proxy/Device.js
+++ b/packages/dev-middleware/src/inspector-proxy/Device.js
@@ -674,7 +674,7 @@ export default class Device {
   // Fetch text, raising an exception if the text could not be fetched,
   // or is too large.
   async _fetchText(url: URL): Promise<string> {
-    if (url.hostname !== 'localhost') {
+    if (!['localhost', '127.0.0.1'].includes(url.hostname)) {
       throw new Error('remote fetches not permitted');
     }