diff --git a/prerender/package.json b/prerender/package.json
index e5066153..45640b87 100644
--- a/prerender/package.json
+++ b/prerender/package.json
@@ -18,7 +18,7 @@
     "grunt-express-server": "^0.4.19",
     "grunt-mocha-cov": "^0.3.0",
     "mocha": "^2.0.1",
-    "tree-kill": "0.0.6"
+    "tree-kill": "1.2.2"
   },
   "engines": {
     "node": "0.8.x",