diff --git a/package.json b/package.json
index 6087299..5dac8f7 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "nyc": "11.1.0",
     "semantic-release": "7.0.1",
     "serve-favicon": "2.4.3",
-    "sinon": "3.2.1",
+    "sinon": "4.4.0",
     "sinon-chai": "2.13.0",
     "strong-error-handler": "2.2.0",
     "supertest": "3.0.0",