diff --git a/package.json b/package.json
index a4d28a41..80598928 100644
--- a/package.json
+++ b/package.json
@@ -104,7 +104,7 @@
     "p-defer": "^3.0.0",
     "p-times": "^2.1.0",
     "p-wait-for": "^3.1.0",
-    "sinon": "^8.1.0",
+    "sinon": "^9.0.0",
     "streaming-iterables": "^4.1.0",
     "wrtc": "^0.4.1"
   },