diff --git a/gulpfile.js b/gulpfile.js
index <HASH>..<HASH> 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,6 +1,6 @@
 var gulp = require('gulp');
 var sourcemaps = require('gulp-sourcemaps');
-var uglify = require('gulp-uglify');
+var uglify = require('gulp-uglify-es').default;
 var rename = require('gulp-rename');
 var sass = require('gulp-sass');
 var cleanCSS = require('gulp-clean-css');
Update gulp to use the new uglifier.