diff --git a/package.json b/package.json
index 68129f3..ecf42a1 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "registry": "http://registry.npmjs.org"
   },
   "devDependencies": {
-    "chai": "^4.1.0",
+    "chai": "^4.1.1",
     "istanbul": "^0.4.2",
     "mocha": "^3.2.0",
     "sinon": "^2.1.0",