diff --git a/package.json b/package.json
index 2fd804bd81b..ec89994baed 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "bower": ">=1.4.1",
     "browserify": ">=10.0",
-    "chai": "^3.0.0",
+    "chai": "^4.3.1",
     "coveralls": "^2.11.2",
     "del": ">=2.0.2",
     "exorcist": "^0.4.0",