diff --git a/package.json b/package.json
index 96180daeb..2bafe3636 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "lerna-changelog": "2.2.0",
     "mocha": "11.5.0",
     "nyc": "17.1.0",
-    "sinon": "20.0.0",
+    "sinon": "21.0.0",
     "typescript": "5.7.2",
     "typescript-eslint": "8.33.1"
   },