diff --git a/package.json b/package.json
index acddb267..c6e749f7 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "chai": "^4.2.0",
     "chai-string": "^1.5.0",
     "dirty-chai": "^2.0.1",
-    "sinon": "^8.1.1"
+    "sinon": "^9.0.0"
   },
   "engines": {
     "node": ">=10.0.0",