diff --git a/package.json b/package.json
index 9c26df2..b7f7a0e 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,6 @@
   "devDependencies": {
     "istanbul": "0.3.0",
     "mocha": "3.1.1",
-    "should": "4.0.4"
+    "should": "11.1.1"
   }
 }