diff --git a/package.json b/package.json
index 80c64d6..1bbe337 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "bluebird": "^3.5.0"
   },
   "dependencies": {
-    "bluebird": "^3.5.0"
+    "bluebird": "^3.5.0",
+    "hexdump.js": "^1.0.4"
   }
 }