diff --git a/external/survey-2018/package.json b/external/survey-2018/package.json
index f5c798625abc1..e3a76e13363fb 100644
--- a/external/survey-2018/package.json
+++ b/external/survey-2018/package.json
@@ -5,6 +5,6 @@
     "build": "uglifyjs -c -m -o data.min.js data.js && uglifyjs -c -m -o full.min.js full.js && uglifyjs -c -m -o graph.min.js graph.js"
   },
   "devDependencies": {
-    "uglify-js": "^3.3.28"
+    "uglify-js": "^3.14.3"
   }
 }