diff --git a/package.json b/package.json
index 49915b5..9972acd 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "bitcoinjs-message": "2.0.0",
     "body-parser": "1.13.2",
     "express": "4.13.1",
-    "lodash": "3.10.0",
+    "lodash": "4.17.21",
     "moment": "2.10.6",
     "mongoose": "5.13.20",
     "mongoose-q": "0.0.17",