diff --git a/libs/brackets-server/embedded-ext/brackets-minify/node/package.json b/libs/brackets-server/embedded-ext/brackets-minify/node/package.json
index e67ade51..9db77afc 100644
--- a/libs/brackets-server/embedded-ext/brackets-minify/node/package.json
+++ b/libs/brackets-server/embedded-ext/brackets-minify/node/package.json
@@ -7,7 +7,7 @@
   "author": "Andrew Bagshaw",
   "license": "https://github.com/abagshaw/brackets-minifier#license",
   "dependencies": {
-    "clean-css": "3.3.6",
+    "clean-css": "4.2.1",
     "mkpath": "^1.0.0",
     "uglify-js": "2.4.24"
   }