diff --git a/package.json b/package.json
index e95652a..6f4c50d 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
     "react-addons-test-utils": "^15.3.0",
     "react-dom": "^15.3.0",
     "sass-loader": "^4.0.0",
-    "sinon": "^1.17.0",
+    "sinon": "^2.3.2",
     "sinon-chai": "^2.8.0",
     "skin-deep": "^0.16.0",
     "stylus": "^0.54.0",