diff --git a/package.json b/package.json
index 7c596c7..0deefe1 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
         "mocha": "^5.0.5",
         "prettier": "^1.10.2",
         "remap-istanbul": "^0.11.0",
-        "sinon": "^4.1.2",
+        "sinon": "^5.0.0",
         "sinon-chai": "^3.0.0",
         "typings": "^2.1.1"
     }