diff --git a/package-lock.json b/package-lock.json
index a75f2361..7d549296 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13237,13 +13237,21 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.2.1.tgz",
-      "integrity": "sha512-BhZTJPmOKPSUcjnx2nlfaOQKHLyjjT4HFyzFWF1BUErx9knJNpdW94ql5o8qVxeNL+8IAWjEjnPvASH2yZnkMg==",
+      "version": "3.3.22",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.3.22.tgz",
+      "integrity": "sha512-tqw96rL6/BG+7LM5VItdhDjTQmL5zG/I0b2RqWytlgeHe2eydZHuBHdA9vuGpCDhH/ZskNGcqDhivoR2xt8RIw==",
       "dev": true,
       "requires": {
-        "commander": "2.12.2",
+        "commander": "2.15.1",
         "source-map": "0.6.1"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.15.1",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
+          "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
+          "dev": true
+        }
       }
     },
     "uglify-to-browserify": {
diff --git a/package.json b/package.json
index b776a8a6..7e240604 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": "3.2.1",
+    "uglify-js": "3.3.22",
     "webpack": "3.10.0",
     "webpack-dev-server": "2.9.7"
   },