diff --git a/package.json b/package.json
index f730bc9..37d94d9 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "basichtml": "^2.1.2",
     "coveralls": "^3.0.2",
     "istanbul": "^0.4.5",
-    "uglify-js": "^3.4.9"
+    "uglify-js": "^3.8.1"
   },
   "repository": {
     "type": "git",