diff --git a/files/__addonLocation__/package.json b/files/__addonLocation__/package.json
index a81736c..b8e8f58 100644
--- a/files/__addonLocation__/package.json
+++ b/files/__addonLocation__/package.json
@@ -30,7 +30,7 @@
     "start:types": "glint --declaration --watch",<% } else { %>
     "start": "rollup --config --watch",<% } %>
     "test": "echo 'A v2 addon does not have tests, run tests in test-app'",
-    "prepack": "rollup --config"
+    "prepack": <% if (typescript) { %>"concurrently '<%= packageManager %>:build:*'"<% } else { %>"rollup --config"<% } %>
   },
   "dependencies": {
     "@embroider/addon-shim": "^1.8.7",