diff --git a/package.json b/package.json
index f14b112..7b69f91 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
     "selenium-server": "^3.0.1",
     "semver": "^5.3.0",
     "shelljs": "^0.7.6",
-    "sinon": "^2.1.0",
+    "sinon": "^9.2.4",
     "sinon-chai": "^2.8.0",
     "style-loader": "^0.17.0",
     "url-loader": "^0.5.8",