diff --git a/website-prototyping-tools/package.json b/website-prototyping-tools/package.json
index d1a80c41e764b..280b83109beee 100644
--- a/website-prototyping-tools/package.json
+++ b/website-prototyping-tools/package.json
@@ -12,7 +12,7 @@
     "babel-plugin-react-error-catcher": "^1.1.11",
     "babel-relay-plugin": "../scripts/babel-relay-plugin",
     "codemirror": "5.6.0",
-    "css-loader": "0.16.0",
+    "css-loader": "1.0.0",
     "file-loader": "0.8.4",
     "graphiql": "0.1.3",
     "graphql": "0.4.13",