diff --git a/gulpfile.js b/gulpfile.js
index 99f5513ec..e4efdf8d6 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -7,7 +7,7 @@ const gulpif = require('gulp-if');
 const postcss = require('gulp-postcss');
 const rev = require('gulp-rev');
 const tailwindcss = require('tailwindcss');
-const uglify = require('gulp-uglify');
+const uglify = require('gulp-uglify-es').default;
 const webpackStream = require('webpack-stream');
 const webpackConfig = require('./webpack.config.js');
 
diff --git a/package.json b/package.json
index c88a0f1bd..1cb6f6c81 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
         "gulp-postcss": "^7.0.1",
         "gulp-rename": "^1.2.2",
         "gulp-rev": "^8.1.1",
-        "gulp-uglify": "^3.0.0",
+        "gulp-uglify-es": "^1.0.1",
         "jquery": "^3.3.1",
         "lodash": "^4.17.5",
         "postcss": "^6.0.21",
diff --git a/yarn.lock b/yarn.lock
index ffc6a1996..64d21c783 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1269,7 +1269,7 @@ commander@2.8.x:
   dependencies:
     graceful-readlink ">= 1.0.0"
 
-commander@^2.11.0, commander@^2.8.1, commander@~2.15.0:
+commander@^2.11.0, commander@^2.8.1:
   version "2.15.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
 
@@ -2346,17 +2346,15 @@ gulp-rev@^8.1.1:
     vinyl "^2.1.0"
     vinyl-file "^3.0.0"
 
-gulp-uglify@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/gulp-uglify/-/gulp-uglify-3.0.0.tgz#0df0331d72a0d302e3e37e109485dddf33c6d1ca"
+gulp-uglify-es@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/gulp-uglify-es/-/gulp-uglify-es-1.0.1.tgz#9f991de31c646fb37fe589086ffd3f6e2f9e20f1"
   dependencies:
-    gulplog "^1.0.0"
-    has-gulplog "^0.1.0"
-    lodash "^4.13.1"
-    make-error-cause "^1.1.1"
-    through2 "^2.0.0"
-    uglify-js "^3.0.5"
-    vinyl-sourcemaps-apply "^0.2.0"
+    o-stream "^0.2.2"
+    plugin-error "^1.0.1"
+    uglify-es "^3.3.9"
+    vinyl "^2.1.0"
+    vinyl-sourcemaps-apply "^0.2.1"
 
 gulp-util@~2.2.0:
   version "2.2.20"
@@ -2421,12 +2419,6 @@ has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
 
-has-gulplog@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/has-gulplog/-/has-gulplog-0.1.0.tgz#6414c82913697da51590397dafb12f22967811ce"
-  dependencies:
-    sparkles "^1.0.0"
-
 has-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
@@ -3156,7 +3148,7 @@ lodash.values@~2.4.1:
   dependencies:
     lodash.keys "~2.4.1"
 
-lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0:
+lodash@^4.14.0, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0:
   version "4.17.5"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
 
@@ -3190,16 +3182,6 @@ make-dir@^1.0.0:
   dependencies:
     pify "^3.0.0"
 
-make-error-cause@^1.1.1:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/make-error-cause/-/make-error-cause-1.2.2.tgz#df0388fcd0b37816dff0a5fb8108939777dcbc9d"
-  dependencies:
-    make-error "^1.2.0"
-
-make-error@^1.2.0:
-  version "1.3.4"
-  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.4.tgz#19978ed575f9e9545d2ff8c13e33b5d18a67d535"
-
 make-iterator@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/make-iterator/-/make-iterator-1.0.0.tgz#57bef5dc85d23923ba23767324d8e8f8f3d9694b"
@@ -3546,6 +3528,10 @@ number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
 
+o-stream@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/o-stream/-/o-stream-0.2.2.tgz#7fe03af870b8f9537af33b312b381b3034ab410f"
+
 oauth-sign@~0.8.1:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
@@ -5161,7 +5147,7 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-uglify-es@^3.3.4:
+uglify-es@^3.3.4, uglify-es@^3.3.9:
   version "3.3.9"
   resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.3.9.tgz#0c1c4f0700bed8dbc124cdb304d2592ca203e677"
   dependencies:
@@ -5177,13 +5163,6 @@ uglify-js@^2.8.29:
   optionalDependencies:
     uglify-to-browserify "~1.0.0"
 
-uglify-js@^3.0.5:
-  version "3.3.16"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.16.tgz#23ba13efa27aa00885be7417819e8a9787f94028"
-  dependencies:
-    commander "~2.15.0"
-    source-map "~0.6.1"
-
 uglify-to-browserify@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz#6e0924d6bda6b5afe349e39a6d632850a0f882b7"