diff --git a/package.json b/package.json
index 2ff8c09..d60f5d8 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "ember-resolver": "^2.0.3",
     "loader.js": "^4.0.10",
     "mocha": "^3.2.0",
-    "should": "^11.1.2"
+    "should": "^13.1.1"
   },
   "engines": {
     "node": ">= 0.12.0"