diff --git a/packages/core/package.json b/packages/core/package.json
index 3be9773..4eb171e 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -19,6 +19,8 @@
     "build",
     "electron/server.js",
     "electron/server.js.map",
+    "index.css",
+    "index.css.map",
     "index.js",
     "index.js.map",
     "server.js",