diff --git a/package.json b/package.json
index a528778..1999e03 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "http-string-parser": "0.0.6"
   },
   "devDependencies": {
-    "chai": "4.1.2",
+    "chai": "4.2.0",
     "eslint": "4.19.0",
     "eslint-config-airbnb-base": "12.1.0",
     "eslint-plugin-import": "2.17.3",