diff --git a/package.json b/package.json
index 33f81fb..ac1cd4a 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "imgflo-url": "^1.2.0"
   },
   "devDependencies": {
-    "chai": "^3.3.0",
+    "chai": "^3.4.1",
     "coffee-script": "^1.10.0",
     "mocha": "^3.1.2"
   },