diff --git a/superset-frontend/webpack.config.js b/superset-frontend/webpack.config.js
index 7e424d73b7c..36522596d7d 100644
--- a/superset-frontend/webpack.config.js
+++ b/superset-frontend/webpack.config.js
@@ -632,7 +632,16 @@ if (isDevMode) {
     hot: true,
     host: devserverHost,
     port: devserverPort,
-    allowedHosts: ['localhost', '.localhost', '127.0.0.1', '::1', '.local'],
+    allowedHosts: [
+      ...new Set([
+        devserverHost,
+        'localhost',
+        '.localhost',
+        '127.0.0.1',
+        '::1',
+        '.local',
+      ]),
+    ],
     proxy: [() => proxyConfig],
     client: {
       overlay: {