diff --git a/packages/nitro/src/rollup/config.ts b/packages/nitro/src/rollup/config.ts
index 2d5e8e2d7b..0a119cd368 100644
--- a/packages/nitro/src/rollup/config.ts
+++ b/packages/nitro/src/rollup/config.ts
@@ -274,6 +274,7 @@ export const getRollupConfig = (nitroContext: NitroContext) => {
 
   // https://github.com/rollup/plugins/tree/master/packages/commonjs
   rollupConfig.plugins.push(commonjs({
+    esmExternals: id => !id.startsWith('unenv/'),
     requireReturnsDefault: 'auto'
   }))