diff --git a/package.json b/package.json
index 159e326..be6a161 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "istanbul": "0.1.30",
     "uglify-js": "2.4.13",
     "node-browserify": "https://github.com/substack/node-browserify/tarball/master",
-    "sinon": "^1.9.0"
+    "sinon": "1.9.0"
   },
   "testling": {
     "browsers": [