diff --git a/package.json b/package.json
index 7433779..b9e900a 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     ]
   },
   "dependencies": {
-    "cssnano": "^4.1.10",
+    "cssnano": "^5.0.8",
     "last-call-webpack-plugin": "^3.0.0"
   },
   "devDependencies": {