diff --git a/package.json b/package.json
index 0edde49..22f591f 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "mocha": "^3.2.0",
     "nyc": "^11.0.2",
-    "should": "^11.2.0",
+    "should": "^12.0.0",
     "standard": "^10.0.2"
   },
   "dependencies": {