diff --git a/packages/excel-builder-vanilla/package.json b/packages/excel-builder-vanilla/package.json
index 2368296..c61ba83 100644
--- a/packages/excel-builder-vanilla/package.json
+++ b/packages/excel-builder-vanilla/package.json
@@ -32,7 +32,8 @@
   },
   "type": "module",
   "files": [
-    "dist"
+    "dist",
+    "src"
   ],
   "main": "./dist/index.js",
   "exports": {