diff --git a/package.json b/package.json
index e914159..3563409 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "bluebird": "^2.10.1",
     "debug": "^2.2.0",
     "mime": "^1.3.4",
+    "file-type": "^3.3.1",
     "request": "^2.64.0"
   },
   "devDependencies": {