diff --git a/package.json b/package.json
index 4660049a6..f0f1ed4b9 100644
--- a/package.json
+++ b/package.json
@@ -56,6 +56,6 @@
         "istanbul": "0.4.5",
         "mocha": "3.4.1",
         "mocha-phantomjs": "4.1.0",
-        "sinon": "2.3.1"
+        "sinon": "2.3.4"
     }
 }