diff --git a/package.json b/package.json
index 781bfb3..f64ba32 100644
--- a/package.json
+++ b/package.json
@@ -117,6 +117,7 @@
     "check:types": "tsc --project tsconfig.lib.json"
   },
   "files": [
+    "lib",
     "build",
     "serve.js"
   ],