diff --git a/package.json b/package.json
index f8aad0aa..9d3c5016 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
     "nyc": "^15.0.0",
     "p-retry": "^4.0.0",
     "proxyquire": "^2.0.0",
-    "sinon": "^8.0.4",
+    "sinon": "^9.0.0",
     "stream-buffers": "^3.0.2",
     "tempy": "^0.4.0",
     "xo": "^0.26.0"