diff --git a/package.json b/package.json
index 971427d..4f811a7 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   "dependencies": {
     "autoprefixer": "^8.1.0",
     "css-mqpacker": "^6.0.2",
-    "cssnano": "^3.10.0",
+    "cssnano": "^4.1.10",
     "perfectionist": "^2.4.0",
     "postcss": "^6.0.19",
     "postcss-calc": "^6.0.1",