diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e3718ce..1ba01e6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,4 +12,6 @@ cd gmi-web
 npm link
 ```
 
+Use `npm run test` to compare your changes to the latest snapshots and when you are ready `npm run test:update` to save the current snapshots. `npm run test:watch` will auto-run the tests interactively to streamline this process.
+
 Patches and issues can be submitted to code@talon.computer or expressed through the channels available on [Codeberg](https://codeberg.org/talon/gmi-web).
diff --git a/package.json b/package.json
index f5a4d4b..47ea47c 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,9 @@
     "gmi-web.css",
     "gmi.css",
     "html.js",
+    "html.spec.js",
     "css.js",
+    "css.spec.js",
     "cli.js"
   ],
   "scripts": {