diff --git a/package.json b/package.json
index c1c3b02..e605953 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,6 @@
     "eslint": "^4.7.1",
     "jest-cli": "^21.0.0",
     "promise": "~7.1.1",
-    "sinon": "~3.3.0"
+    "sinon": "~4.1.2"
   }
 }