diff --git a/searx/static/themes/simple/package.json b/searx/static/themes/simple/package.json
index fdb4f88bf..0472904dc 100644
--- a/searx/static/themes/simple/package.json
+++ b/searx/static/themes/simple/package.json
@@ -3,7 +3,7 @@
     "eslint": "^8.18.0",
     "grunt": "~1.6.1",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-cssmin": "^4.0.0",
+    "grunt-contrib-cssmin": "^5.0.0",
     "grunt-contrib-less": "~3.0.0",
     "grunt-contrib-uglify": "~5.2.1",
     "grunt-xmlmin": "~0.1.8",