diff --git a/searx/static/themes/simple/package.json b/searx/static/themes/simple/package.json
index 53daa632..b1fea0a8 100644
--- a/searx/static/themes/simple/package.json
+++ b/searx/static/themes/simple/package.json
@@ -5,7 +5,7 @@
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-cssmin": "^4.0.0",
     "grunt-contrib-less": "~3.0.0",
-    "grunt-contrib-uglify": "~5.1.0",
+    "grunt-contrib-uglify": "~5.2.1",
     "grunt-xmlmin": "~0.1.8",
     "grunt-contrib-watch": "~1.1.0",
     "grunt-eslint": "^24.0.0",