diff --git a/package.json b/package.json
index 91710ece..d195e038 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-cssmin": "^4.0.0",
     "grunt-contrib-jshint": "~3.0.0",
-    "grunt-contrib-uglify": "~5.0.0",
+    "grunt-contrib-uglify": "~5.2.2",
     "grunt-contrib-watch": "~1.1.0",
     "grunt-jekyll": "~1.0.0",
     "grunt-sass": "^3.0.2",