diff --git a/package.json b/package.json
index cfe0891..ef62e11 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "type": "commonjs",
   "main": "index.js",
   "files": [
-    "lib/*.js"
+    "lib/**/*"
   ],
   "exports": {
     ".": {