diff --git a/package.json b/package.json
index 12b0ccd97..760f4fdf3 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "temp": "0.5.0",
     "text-buffer": "^1.4.4",
     "theorist": "1.x",
-    "underscore-plus": "^1.1.0",
+    "underscore-plus": "^1.1.1",
     "vm-compatibility-layer": "0.1.0"
   },
   "packageDependencies": {