diff --git a/package.json b/package.json
index 00957a1..2cdff61 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "babel-preset-es2015": "^6.9.0",
     "babel-preset-react": "^6.11.1",
     "browser-sync": "^2.13.0",
-    "cssnano": "^3.7.1",
+    "cssnano": "^3.9.0",
     "del": "^2.2.1",
     "enzyme": "^2.3.0",
     "fixpack": "^2.3.1",