diff --git a/package.json b/package.json
index d78c822b..e13004f4 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "eslint-plugin-promise": "^5.1.0",
     "nyc": "^15.0.0",
     "pkg-up": "^3.0.1",
-    "sinon": "^11.0.0",
+    "sinon": "^21.1.0",
     "tsd": "^0.14.0",
     "typedoc": "^0.19.0",
     "typescript": "^4.0.2"