diff --git a/package.json b/package.json
index 82de7a5..c555354 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
   },
   "dependencies": {
     "autoprefixer": "6.7.7",
-    "csswring": "4.2.3",
+    "csswring": "5.1.1",
     "es6-promise": "4.0.5",
     "postcss": "5.2.15",
     "postcss-import": "7.1.3",