diff --git a/package.json b/package.json
index fa476fe..3d23df9 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
   "author": "ChainSafe Systems",
   "license": "Apache-2.0",
   "files": [
-    "lib"
+    "lib/**/*.js",
+    "lib/**/*.js.map",
+    "lib/**/*.d.ts"
   ],
   "keywords": [
     "ethereum",