diff --git a/packages/trace-viewer/vite.sw.config.ts b/packages/trace-viewer/vite.sw.config.ts
index 60e90b96ac..57e3b7fda3 100644
--- a/packages/trace-viewer/vite.sw.config.ts
+++ b/packages/trace-viewer/vite.sw.config.ts
@@ -40,6 +40,7 @@ export default defineConfig({
     // outputs into the public dir, where the build of vite.config.ts will pick it up
     outDir: path.resolve(__dirname, 'public'),
     emptyOutDir: false,
+    sourcemap: true,
     rollupOptions: {
       input: {
         sw: path.resolve(__dirname, 'src/sw-main.ts'),