diff --git a/package.json b/package.json
index eb868fa..345afc2 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "nprogress": "0.2.0",
     "onmount": "1.3.0",
     "pjax": "0.2.4",
-    "postcss": "5.2.5",
+    "postcss": "6.0.1",
     "pug": "2.0.0-beta6",
     "stylus": "0.54.5",
     "uglifyify": "3.0.4",