diff --git a/superset-frontend/webpack.config.js b/superset-frontend/webpack.config.js
index da8c3689b410..8530db279f72 100644
--- a/superset-frontend/webpack.config.js
+++ b/superset-frontend/webpack.config.js
@@ -317,7 +317,12 @@ const config = {
     menu: addPreamble('src/views/menu.tsx'),
     spa: addPreamble('src/views/index.tsx'),
     embedded: addPreamble('src/embedded/index.tsx'),
-    'service-worker': path.join(APP_DIR, 'src/service-worker.ts'),
+    // Skip service-worker build in dev mode to avoid overwriting the placeholder
+    ...(isDevMode
+      ? {}
+      : {
+          'service-worker': path.join(APP_DIR, 'src/service-worker.ts'),
+        }),
   },
   cache: {
     type: 'filesystem',