diff --git a/package.json b/package.json
index 399b4b3a..89517e54 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "Labels pull requests by files altered",
   "main": "lib/main.js",
   "scripts": {
-    "build": "tsc && ncc build",
+    "build": "tsc && ncc build lib/main.js",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
     "test": "jest"