diff --git a/README.md b/README.md
index b0c4919..246fc88 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ For development: `npm run dev`.
 
 For release build that does not require any interactivity on server, `npm run start-release`
 (which lints and typechecks and tests everything, builds the project into static bundles in `dist/`, and serves static files from `dist` directory).
-2
+
 ### Limitations, notes
 
 While the original task didn't mention it, it seemed like a good idea to make markers draggable (in order to be able to change the position of an existing marker).
diff --git a/package.json b/package.json
index 5fe27fa..86b2ba1 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
         "lint": "eslint \"{src,test}/**/*.{ts,tsx}\"",
         "typecheck": "tsc --noEmit",
         "test": "tap run",
-        "prebuild": "npm run lint && npm run typecheck",
+        "prebuild": "npm run lint && npm run typecheck && npm run test",
         "preview": "vite preview"
     },
     "dependencies": {