diff --git a/themes/coopcloud.tech/assets/scss/bulma/package.json b/themes/coopcloud.tech/assets/scss/bulma/package.json
index 464a95a..17eb537 100644
--- a/themes/coopcloud.tech/assets/scss/bulma/package.json
+++ b/themes/coopcloud.tech/assets/scss/bulma/package.json
@@ -36,7 +36,7 @@
   "description": "Modern CSS framework based on Flexbox",
   "devDependencies": {
     "autoprefixer": "^9.8.6",
-    "clean-css-cli": "^4.3.0",
+    "clean-css-cli": "^5.0.0",
     "node-sass": "^4.14.1",
     "postcss-cli": "^7.1.2",
     "rimraf": "^3.0.2"