diff --git a/package.json b/package.json
index fa8c670..d426cca 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,9 @@
     "lint": "eslint .",
     "test": "mocha"
   },
+  "files": [
+    "index.js"
+  ],
   "devDependencies": {
     "@sup39/markdown-it-attr": "^1.0.0",
     "@sup39/markdown-it-inline-tag": "^1.0.0",