diff --git a/package.json b/package.json
index 849ef902..61ec307b 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "serve-favicon": "^2.4.3",
     "strict-uri-encode": "^2.0.0",
     "style-loader": "^0.19.0",
-    "uglify-js": "^3.0.28",
+    "uglify-js": "^3.14.1",
     "uglifyjs-webpack-plugin": "^1.0.1",
     "universal-fetch": "^1.0.0",
     "url-loader": "^0.6.2",
diff --git a/yarn.lock b/yarn.lock
index e61d65ce..f9fc8303 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7515,12 +7515,9 @@ uglify-js@^2.8.29:
   optionalDependencies:
     uglify-to-browserify "~1.0.0"
 
-uglify-js@^3.0.28:
-  version "3.1.5"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.1.5.tgz#4c1a6d53b2fe77e4710dd94631853effd3ff5143"
-  dependencies:
-    commander "~2.11.0"
-    source-map "~0.6.1"
+uglify-js@^3.14.1:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.14.1.tgz#e2cb9fe34db9cb4cf7e35d1d26dfea28e09a7d06"
 
 uglify-to-browserify@~1.0.0:
   version "1.0.2"