diff --git a/packages/vite/src/node/config.ts b/packages/vite/src/node/config.ts
index 0f0e91651af9af..283ac9649ccfaf 100644
--- a/packages/vite/src/node/config.ts
+++ b/packages/vite/src/node/config.ts
@@ -831,6 +831,7 @@ async function bundleConfigFile(
     platform: 'node',
     bundle: true,
     format: mjs ? 'esm' : 'cjs',
+    sourcemap: 'inline',
     metafile: true,
     plugins: [
       {