diff --git a/package.json b/package.json
index da5a8d5..ba83851 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "jshint-stylish": "^2.2.0",
     "mocha": "*",
     "semantic-release": "^6.3.2",
-    "should": "*",
+    "should": ">=13.0.1",
     "validate-commit-msg": "^2.6.1"
   },
   "config": {