diff --git a/website-prototyping-tools/package.json b/website-prototyping-tools/package.json
index d1a80c41e764b..7a9bb83249d17 100644
--- a/website-prototyping-tools/package.json
+++ b/website-prototyping-tools/package.json
@@ -8,12 +8,12 @@
   "dependencies": {
     "autoprefixer-loader": "3.1.0",
     "babel-core": "^5.8.35",
-    "babel-loader": "^5.4.0",
+    "babel-loader": "^8.2.4",
     "babel-plugin-react-error-catcher": "^1.1.11",
     "babel-relay-plugin": "../scripts/babel-relay-plugin",
     "codemirror": "5.6.0",
-    "css-loader": "0.16.0",
-    "file-loader": "0.8.4",
+    "css-loader": "4.0.0",
+    "file-loader": "6.0.0",
     "graphiql": "0.1.3",
     "graphql": "0.4.13",
     "graphql-relay": "0.4.2",
@@ -31,8 +31,8 @@
     "react-dom": "^0.14.7",
     "react-relay": "../",
     "relay-local-schema": "0.3.0",
-    "style-loader": "0.12.3",
-    "webpack": "^1.12.14"
+    "style-loader": "1.1.4",
+    "webpack": "^5.0.0"
   },
   "scripts": {
     "start": "webpack --watch --progress --colors",