diff --git a/package.json b/package.json
index dd8d072..676b923 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "tree-wrapper": "^0.1.0"
   },
   "devDependencies": {
-    "autoprefixer": "~6.4.0",
+    "autoprefixer": "~6.7.7",
     "grunt": "~0.4.5",
     "grunt-contrib-connect": "~1.0.2",
     "grunt-contrib-csslint": "~1.0.0",