diff --git a/package.json b/package.json
index 0c56c1d..222ff55 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "publish-please": "5.5.1",
     "reflect-metadata": "0.1.13",
     "run-sequence": "2.2.1",
-    "sinon": "7.4.1",
+    "sinon": "9.0.1",
     "tslint": "5.19.0",
     "typescript": "3.5.3",
     "updates": "^8.5.3"