diff --git a/build.md b/build.md
index e69de29..46bf901 100644
--- a/build.md
+++ b/build.md
@@ -0,0 +1,11 @@
+# Build
+
+## Dev
+Run `npm run dev`.
+
+## Release
+1. Update version info in `versions.json`, `manifest.json`, and `package.json`.
+2. Git commit with version tag `x.y.z`.
+3. Run `npm run build`.
+4. Push changes to GitHub.
+5. Issue a new release on GitHub, include the built `main.js`, `styles.css`, and `maifest.json` files. 
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