diff --git a/package.json b/package.json
index 69f43ff..f5faca2 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "babel-preset-es2015": "^6.24.1",
     "babelify": "^7.3.0",
     "browserify": "^14.4.0",
-    "chai": "^4.0.2",
+    "chai": "^4.1.1",
     "coveralls": "^2.13.1",
     "gzip-size-cli": "^2.0.0",
     "incomplete-url": "^1.0.2",