diff --git a/package.json b/package.json
index 2b0ff3c..6f4e932 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "mocha": "^5.0.1",
     "nyc": "^11.4.1",
     "rimraf": "^2.6.2",
-    "sinon": "^5.0.0"
+    "sinon": "^6.0.0"
   },
   "nyc": {
     "sourceMap": false,