diff --git a/package.json b/package.json
index 543e3d9..880eec4 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "tap"
   ],
   "dependencies": {
-    "sinon": "^4.5.0"
+    "sinon": "^5.0.1"
   },
   "devDependencies": {
     "ava": "^0.25.0",