diff --git a/package.json b/package.json
index d232484..4aa1ad3 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "istanbul-harmony": "0",
     "koa": "0",
     "mocha": "1",
-    "should": "3",
+    "should": "8.1.1",
     "supertest": "0"
   },
   "scripts": {