diff --git a/package.json b/package.json
index d534436..8cc8358 100644
--- a/package.json
+++ b/package.json
@@ -70,6 +70,6 @@
     "rollup-plugin-commonjs": "^8.0.2",
     "rollup-plugin-node-resolve": "^3.0.0",
     "rollup-plugin-uglify": "^2.0.0",
-    "sinon": "^3.0.0"
+    "sinon": "^4.0.0"
   }
 }