diff --git a/package.json b/package.json
index 1eaff90..154443d 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
   "devDependencies": {
     "@substrate-system/debug": "^0.9.0",
     "auto-changelog": "^2.4.0",
-    "cssnano": "^7.0.7",
+    "cssnano": "^8.0.1",
     "markdown-toc": "^1.2.0",
     "postcss": "^8.5.3",
     "postcss-cli": "^11.0.1",