diff --git a/package.json b/package.json
index c2009cf..337bba7 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "bluebird": "^2.3.11",
     "bunyan": "^1.2.2",
-    "lodash": "^2.4.1"
+    "lodash": "^4.17.21"
   },
   "devDependencies": {
     "jasmine": "^2.1.0",