diff --git a/package.json b/package.json
index 365d5ae..321e81d 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "babel-cli": "^6.6.5",
     "babel-register": "^6.7.2",
-    "chai": "4.0.2",
+    "chai": "4.1.0",
     "chai-as-promised": "^6.0.0",
     "eslint": "^4.1.0",
     "istanbul": "^1.0.0-alpha.2",