diff --git a/package.json b/package.json
index 338e992..6cae329 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   "dependencies": {
     "async": "~1.5.2",
     "debug": "^1.0.4",
-    "underscore": "~1.6.0",
+    "underscore": "~1.12.1",
     "xml-crypto": "^0.8.1",
     "xml-encryption": "^0.9.0",
     "xml2js": "~0.4.1",