diff --git a/package.json b/package.json
index 2e67925a..06402199 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@types/jest": "30.0.0",
     "@types/netmask": "2.0.6",
     "@types/node": "24.10.1",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.0",
     "ip-address": "10.1.0",
     "ip6addr": "0.2.5",
     "jest": "30.2.0",