diff --git a/package.json b/package.json
index ae556a9..1c5314f 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "null-loader": "^0.1.1",
     "postcss-loader": "^0.9.1",
     "sass-loader": "^4.0.0",
-    "sinon": "^1.17.3",
+    "sinon": "^2.3.2",
     "style-loader": "^0.13.0",
     "url-loader": "^0.5.7",
     "webpack": "2.1.0-beta.20"