diff --git a/package.json b/package.json
index f524e9f..e2c3e55 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "load-grunt-tasks": "^4.0.0",
     "mocha": "~5.2.0",
     "pakit": "^1.0.2",
-    "sinon": "~6.3.3"
+    "sinon": "~9.0.2"
   },
   "dependencies": {
     "belty": "^5.2.2",