diff --git a/package.json b/package.json
index 217de9e..d45965c 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
         "csslint": "1.0.x",
         "eslint": "~4.6.1",
         "grunt": "1.0.x",
-        "grunt-postcss": "0.8.x",
+        "grunt-postcss": "~0.9.0",
         "grunt-contrib-clean": "~1.1.0",
         "grunt-contrib-connect": "1.0.x",
         "grunt-contrib-copy": "1.0.x",