diff --git a/package.json b/package.json
index bf0fe467424..e36d8da4d07 100644
--- a/package.json
+++ b/package.json
@@ -185,7 +185,7 @@
     "node-sass": "4.5.3",
     "postcss": "6.0.8",
     "postcss-cssnext": "2.8.0",
-    "postcss-loader": "1.3.3",
+    "postcss-loader": "4.0.0",
     "postcss-modules-values-replace": "1.0.0",
     "prop-types": "15.5.10",
     "react": "15.6.1",