diff --git a/package.json b/package.json
index 7f1d633..6197890 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "extract-text-webpack-plugin": "^3.0.0",
     "postcss-cssnext": "^3.0.2",
     "postcss-loader": "^2.0.6",
-    "postcss-nested": "^3.0.0",
+    "postcss-nested": "^4.0.0",
     "raw-loader": "^0.5.1",
     "react-dom": "^15.6.1",
     "storybook-readme": "^3.0.5",