diff --git a/package.json b/package.json
index 4d4962c..4fa7a70 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "nyc": "^13.1.0",
     "pre-commit": "^1.2.2",
     "rimraf": "^2.6.3",
-    "sinon": "^7.2.3",
+    "sinon": "^9.0.0",
     "supertest": "^3.4.2"
   },
   "dependencies": {