diff --git a/package.json b/package.json
index 2972907b..3ed7e147 100644
--- a/package.json
+++ b/package.json
@@ -178,7 +178,7 @@
   "devDependencies": {
     "@types/sinon": "^17.0.2",
     "aegir": "^47.0.12",
-    "sinon": "^19.0.2",
+    "sinon": "^20.0.0",
     "sinon-ts": "^2.0.0"
   },
   "browser": {