diff --git a/package.json b/package.json
index deaa2dd..22884eb 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "in-publish": "^2.0.0",
     "isparta": "^4.0.0",
     "run-sequence": "^1.1.5",
-    "sinon": "^1.17.5",
+    "sinon": "^5.0.1",
     "sinon-chai": "^2.8.0",
     "weak": "^1.0.0",
     "yargs": "^6.4.0"