diff --git a/package.json b/package.json
index 7be6b68..e0efdae 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "babel-polyfill": "6.23.0",
     "babel-preset-es2015": "6.24.1",
     "babel-preset-stage-0": "6.24.1",
-    "chai": "4.1.0",
+    "chai": "4.1.1",
     "coveralls": "2.13.1",
     "documentation": "4.0.0-rc.1",
     "eslint": "3.12.2",