diff --git a/package.json b/package.json
index 3611ea61e..6e9d19275 100644
--- a/package.json
+++ b/package.json
@@ -4,9 +4,9 @@
   "private": true,
   "license": "MIT",
   "scripts": {
-    "build": "rm -rf _site dist; eleventy; cp _site/docs/index.html _site/index.html; parcel build _site/index.html _site/docs/index.html '_site/*/*/*.html' --public-url $(node public-url.js)",
+    "build": "rm -rf _site dist; eleventy; cp _site/docs/index.html _site/index.html; parcel build '_site/*.html' _site/docs/index.html '_site/*/*/*.html' --public-url $(node public-url.js)",
     "watch": "eleventy --watch",
-    "serve": "parcel _site/index.html _site/docs/index.html '_site/*/*/*.html'",
+    "serve": "parcel '_site/*.html' _site/docs/index.html '_site/*/*/*.html'",
     "start": "run-p watch serve",
     "debug": "DEBUG=* eleventy",
     "lint": "prettier --write 'generate-api-docs/*.js' 'src/**/*.{js,json,md,scss}'",
diff --git a/src/404.njk b/src/404.njk
new file mode 100644
index 000000000..f725c9265
--- /dev/null
+++ b/src/404.njk
@@ -0,0 +1,7 @@
+---
+title: 404 Not Found
+permalink: 404.html
+layout: layout.njk
+---
+
+<p>Maybe try the <a href="/">home page</a>?</p>