diff --git a/package.json b/package.json
index 234b265..7cee530 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
         "relp": "git://github.com/nbrownus/node-relp",
         "smtp-server": "^3.4.7",
         "statsd-client": "0.2.1",
-        "underscore": "1.8.3",
+        "underscore": "1.13.8",
         "uuid": "3.0.1"
     },
     "devDependencies": {