diff --git a/package.json b/package.json
index b05717ad..6d6ea159 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "devDependencies": {
     "@lodder/grunt-postcss": "3.1.1",
     "autoprefixer": "10.5.4",
-    "cssnano": "8.0.8",
+    "cssnano": "9.0.1",
     "grunt": "1.6.3",
     "grunt-cli": "1.5.0",
     "grunt-concurrent": "3.0.0",