diff --git a/package.json b/package.json
index ec5268e..11e4c20 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "mocha": "^3.1.2",
     "mockery": "^2.0.0",
     "nock": "^9.0.2",
-    "sinon": "^1.17.6",
+    "sinon": "^15.1.2",
     "sinon-promise": "^0.1.3",
     "supertest": "^2.0.1"
   }