diff --git a/package.json b/package.json
index 518c3eb..fd672f5 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,9 @@
   "version": "1.1.1",
   "description": "The string_decoder module from Node core",
   "main": "lib/string_decoder.js",
+  "files": [
+    "lib"
+  ],
   "dependencies": {
     "safe-buffer": "~5.1.0"
   },