diff --git a/package-lock.json b/package-lock.json
index f6d95ff88..55c17918c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10577,9 +10577,9 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.9.2",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.2.tgz",
-      "integrity": "sha512-zGVwKslUAD/EeqOrD1nQaBmXIHl1Vw371we8cvS8I6mYK9rmgX5tv8AAeJdfsQ3Kk5mGax2SVV/AizxdNGhl7Q==",
+      "version": "3.9.3",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.3.tgz",
+      "integrity": "sha512-r5ImcL6QyzQGVimQoov3aL2ZScywrOgBXGndbWrdehKoSvGe/RmiE5Jpw/v+GvxODt6l2tpBXwA7n+qZVlHBMA==",
       "dev": true,
       "requires": {
         "commander": "~2.20.3"
diff --git a/package.json b/package.json
index 9205c3eb1..6566448e4 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "pad-right": "0.2.2",
     "standard": "14.3.4",
     "sylvester": "0.0.21",
-    "uglify-js": "3.9.2",
+    "uglify-js": "3.9.3",
     "underscore": "1.10.2",
     "webpack": "4.43.0",
     "zeros": "1.0.0"