diff --git a/package.json b/package.json
index 4df8acb..bf8f97a 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "eslint-config-standard": "6.2.0",
     "eslint-plugin-promise": "3.4.2",
     "eslint-plugin-standard": "2.1.0",
-    "sinon": "3.2.1",
+    "sinon": "3.3.0",
     "supertest": "3.0.0"
   },
   "ava": {