diff --git a/package.json b/package.json
index 82d4f2b..a75bbfc 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "istanbul": "^0.4.5",
     "jsdoc": "^3.4.3",
     "mocha": "^5.0.0",
-    "sinon": "^6.0.0",
+    "sinon": "^8.1.0",
     "webpack": "^4.0.0",
     "webpack-cli": "^3.1.0"
   }