diff --git a/gulpfile.js b/gulpfile.js
index 39231ec..f7823fd 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -222,7 +222,9 @@ async function core() {
         globalName: 'luckysheet',    
         entryPoints: ['src/index.js'],
         bundle: true,
-        // minify: true,
+        minify: production,
+        banner: { js: banner },
+        target: ['es2015'],
         sourcemap: true,
         outfile: 'dist/luckysheet.umd.js',
         logLevel: 'error',