diff --git a/package.json b/package.json
index a9afcda3fa6..720b2b44500 100644
--- a/package.json
+++ b/package.json
@@ -168,7 +168,7 @@
     "url-loader": "0.5.7"
   },
   "devDependencies": {
-    "autoprefixer": "6.3.7",
+    "autoprefixer": "6.4.0",
     "babel-core": "6.11.4",
     "babel-eslint": "6.1.2",
     "babel-gettext-extractor": "git+https://github.com/muffinresearch/babel-gettext-extractor.git#f0f00b2afb71cba5edfb43d377bde9e1b08cdb46",