diff --git a/package.json b/package.json
index 784cb8b3b..e13a254ec 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "temp": "0.5.0",
     "text-buffer": "^2.2.2",
     "theorist": "^1",
-    "underscore-plus": "^1.3.0",
+    "underscore-plus": "^1.4",
     "vm-compatibility-layer": "0.1.0"
   },
   "packageDependencies": {