diff --git a/packages/xarc-opt-karma/package.json b/packages/xarc-opt-karma/package.json
index 03faf438b..26b79bb60 100644
--- a/packages/xarc-opt-karma/package.json
+++ b/packages/xarc-opt-karma/package.json
@@ -51,7 +51,7 @@
     "karma-spec-reporter": "0.0.36",
     "karma-webpack": "^5.0.0",
     "mocha": "^10.2.0",
-    "sinon": "^15.2.0",
+    "sinon": "^19.0.0",
     "sinon-chai": "^3.7.0"
   },
   "devDependencies": {