diff --git a/package-lock.json b/package-lock.json
index fbf20cca..22135d55 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15860,9 +15860,9 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.0.tgz",
-      "integrity": "sha512-Jcf5naPkX3rVPSQpRn9Vm6Rr572I1gTtR9LnqKgXjmOgfYQ/QS0V2WRStFR53Bdj520M66aCZqt9uzYXgtGrJQ==",
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.1.tgz",
+      "integrity": "sha512-ITeCo3bk/cBaK5zD3RKdCtRoxaQQJMfZke4mikJfpkXOEioqQewcJ/3K9WCqQ+WcfWjP8pkstsfFQNNOVSqnoA==",
       "dev": true,
       "requires": {
         "commander": "~2.15.0",
diff --git a/package.json b/package.json
index 278692b1..559c9948 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "pretty-bytes-cli": "2.0.0",
     "semver": "5.5.0",
     "sinon": "4.5.0",
-    "uglify-js": "3.4.0",
+    "uglify-js": "3.4.1",
     "webpack": "3.12.0",
     "webpack-dev-server": "2.11.2"
   },