diff --git a/package.json b/package.json
index 475128c..b5b59a1 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,7 @@
         "build",
         "LICENSE",
         "package.json",
+        "preinstall.js",
         "README.md"
     ],
     "devDependencies": {