diff --git a/package.json b/package.json
index 5800eaa..25c1595 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   ],
   "scripts": {
     "build": "tsc && node lib",
-    "postbuild": "rimraf lib/**/__tests__",
+    "postbuild": "rimraf lib/**/__tests__ && rimraf lib/.tsbuildinfo",
     "lint": "tslint './src/**/*.{ts,tsx}' -t verbose -p .",
     "prettier:write": "prettier --ignore-path .gitignore --write './**/*.{md,json,yaml,js,jsx,ts,tsx}'",
     "prettier:check": "prettier --ignore-path .gitignore --list-different './**/*.{md,json,yaml,js,jsx,ts,tsx}'"