diff --git a/package.json b/package.json
index 59d886a..c6fec4b 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "bugs": "https://github.com/reshape/minify/issues",
   "dependencies": {
-    "cssnano": "^3.7.4",
+    "cssnano": "^4.1.7",
     "indx": "^0.2.3",
     "reshape-expressions": "^0.1.4",
     "reshape-parser": "^0.3.0",